DATA SHEET
MOS INTEGRATED CIRCUIT
µ
PD750064, 750066, 750068, 750064(A), 750066(A), 750068(A)
4-BIT SINGLE-CHIP MICROCONTROLLERS
The
µ
PD750068 is one of the 75XL Series 4-bit single-chip microcontrollers and has a data processing capability
comparable to that of an 8-bit microcontroller.
The
µ
PD750068 provides more CPU functions compared to the 75X Series and realizes high-speed operation
at the low voltage of 1.8 V, making it ideal for battery-driven applications. This device has on-chip A/D converters,
and sophisticated timers capable of operating as a 16-bit timer. The
µ
PD750068(A) has a higher reliability than
the
µ
PD750068.
A version with on-chip one-time PROM,
µ
PD75P0076, is also available for the evaluation during system
development or for small-scale production.
Detailed function descriptions are provided in the following user’s manual. Be sure to read
the document before designing.
µ
PD750068 User’s Manual: U10670E
Features
O
O
Low-voltage operation: V
DD
= 1.8 to 5.5 V
On-chip memory
• Program memory (ROM):
4096
×
8 bits (
µ
PD750064, 750064(A))
6144
×
8 bits (
µ
PD750066, 750066(A))
8192
×
8 bits (
µ
PD750068, 750068(A))
• Data memory (RAM):
512
×
4 bits
O
O
O
O
Variable instruction execution time for high-speed
operation and power-saved operation
• 0.95, 1.91, 3.81, 15.3
µ
s (@ 4.19-MHz operation)
• 0.67, 1.33, 2.67, 10.7
µ
s (@ 6.0-MHz operation)
• 122
µ
s (@ 32.768-kHz operation)
Internal low-voltage A/D converters
(AV
REF
= 1.8 to 5.5 V)
8-bit resolution
×
8 channels
Small packages (shrink SOP, shrink DIP)
Uses instructions of 75X Series for easy replacement
Applications
O
O
µ
PD750064, 750066, 750068
Cordless phones, audio-visual equipment, home appliances, office machines, fitness machines, meters, gas
ranges, etc.
µ
PD750064(A), 750066(A), 750068(A)
Electrical equipment for automobiles
The
µ
PD750064, 750066, 750068 and
µ
PD750064(A), 750066(A), 750068(A) differ only in quality grade. In
this manual, the
µ
PD750068 is described as typical product unless otherwise specified.
Users of other than the
µ
PD750068 should read the
µ
PD750068 as referring to the pertinent product.
When the description differs among the
µ
PD750064, 750066, and 750068, they also refer to the pertinent (A)
products.
µ
PD750064
→
µ
PD750064(A),
µ
PD750066
→
µ
PD750066(A),
µ
PD750068
→
µ
PD750068(A)
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all devices/types available in every country. Please check with local NEC representative for
availability and additional information.
Document No. U10165EJ2V0DS00 (2nd edition)
Date Published April 1999 N CP(K)
Printed in Japan
The mark
shows major revised points.
©
1995
µ
PD750064, 750066, 750068, 750064(A), 750066(A), 750068(A)
Ordering Information
Part Number
Package
42-pin plastic shrink DIP (600 mil, 1.778-mm pitch)
42-pin plastic shrink SOP (375 mil, 0.8-mm pitch)
42-pin plastic shrink DIP (600 mil, 1.778-mm pitch)
42-pin plastic shrink SOP (375 mil, 0.8-mm pitch)
42-pin plastic shrink DIP (600 mil, 1.778-mm pitch)
42-pin plastic shrink SOP (375 mil, 0.8-mm pitch)
42-pin plastic shrink DIP (600 mil, 1.778-mm pitch)
42-pin plastic shrink SOP (375 mil, 0.8-mm pitch)
42-pin plastic shrink DIP (600 mil, 1.778-mm pitch)
42-pin plastic shrink SOP (375 mil, 0.8-mm pitch)
42-pin plastic shrink DIP (600 mil, 1.778-mm pitch)
42-pin plastic shrink SOP (375 mil, 0.8-mm pitch)
Quality Grade
Standard
Standard
Standard
Standard
Standard
Standard
Special
Special
Special
Special
Special
Special
µ
PD750064CU-×××
µ
PD750064GT-×××
µ
PD750066CU-×××
µ
PD750066GT-×××
µ
PD750068CU-×××
µ
PD750068GT-×××
µ
PD750064CU(A)-×××
µ
PD750064GT(A)-×××
µ
PD750066CU(A)-×××
µ
PD750066GT(A)-×××
µ
PD750068CU(A)-×××
µ
PD750068GT(A)-×××
Remark
×××
indicates ROM code suffix.
Please refer to "Quality Grades on NEC Semiconductor Devices" (Document No. C11531E) published by
NEC Corporation to know the specification of quality grade on the devices and its recommended applications.
Differences between
µ
PD75006× and
µ
PD75006×(A)
Part Number
Item
Quality grade
µ
PD750064
µ
PD750066
µ
PD750068
Standard
µ
PD750064(A)
µ
PD750066(A)
µ
PD750068(A)
Special
2
Data Sheet U10165EJ2V0DS00
µ
PD750064, 750066, 750068, 750064(A), 750066(A), 750068(A)
Functional Outline
Item
Instruction execution time
Function
• 0.95
µ
s, 1.91
µ
s, 3.81
µ
s, 15.3
µ
s (@ 4.19-MHz operation with main system clock)
• 0.67
µ
s, 1.33
µ
s, 2.67
µ
s, 10.7
µ
s (@ 6.0-MHz operation with main system clock)
• 122
µ
s (@ 32.768-kHz operation with subsystem clock)
ROM
4096
×
8 bits (
µ
PD750064)
6144
×
8 bits (
µ
PD750066)
8192
×
8 bits (
µ
PD750068)
RAM
General-purpose register
512
×
4 bits
• 4-bit operation: 8
×
4 banks
• 8-bit operation: 4
×
4 banks
12
On-chip pull-up resistors can be specified by software: 7
Also used for analog input pins: 4
On-chip pull-up resistors can be specified by software: 12
Also used for analog input pins: 4
13 V withstand voltage
On-chip pull-up resistors can be specified by mask option
32
4 channels
• 8-bit timer/event counter: 2 channels (can be used as the 16-bit timer/event counter)
• Basic interval timer/watchdog timer: 1 channel
• Watch timer: 1 channel
Serial interface
• 3-wire serial I/O mode ··· MSB or LSB can be selected for transferring first bit
• 2-wire serial I/O mode
A/D converter
Bit sequential buffer
Clock output (PCL)
8-bit resolution
×
8 channels (1.8 V
≤
AV
REF
≤
V
DD
)
16 bits
•
Φ,
1.05 MHz, 262 kHz, 65.5 kHz (@ 4.19-MHz operation with main system clock)
•
Φ,
1.5 MHz, 375 kHz, 93.8 kHz (@ 6.0-MHz operation with main system clock)
• 2 kHz, 4 kHz, 32 kHz (@ 4.19-MHz operation with main system clock or
@ 32.768-kHz operation with subsystem clock)
• 2.93 kHz, 5.86 kHz, 46.9 kHz (@ 6.0-MHz operation with main system clock)
Vectored interrupt
Test input
System clock oscillator
External: 3, Internal: 4
External: 1, Internal: 1
• Ceramic or crystal oscillator for main system clock oscillation
• Crystal oscillator for subsystem clock oscillation
STOP/HALT mode
T
A
= –40 to +85˚C
V
DD
= 1.8 to 5.5 V
• 42-pin plastic shrink DIP (600 mil, 1.778-mm pitch)
• 42-pin plastic shrink SOP (375 mil, 0.8-mm pitch)
On-chip memory
Input/
output
port
CMOS input
CMOS input/output
12
N-ch open-drain
input/output pins
Total
Timer
8
Buzzer output (BUZ)
Standby function
Operating ambient temperature
Power supply voltage
Package
Data Sheet U10165EJ2V0DS00
3
µ
PD750064, 750066, 750068, 750064(A), 750066(A), 750068(A)
CONTENTS
1. PIN CONFIGURATION (Top View) ...................................................................................................... 6
2. BLOCK DIAGRAM ................................................................................................................................ 7
3. PIN FUNCTION ..................................................................................................................................... 8
3.1 Port Pins ...................................................................................................................................... 8
3.2 Non-port Pins ............................................................................................................................ 10
3.3 Pin Input/Output Circuits ......................................................................................................... 12
3.4 Recommended Connection of Unused Pins .......................................................................... 15
4. SWITCHING FUNCTION BETWEEN Mk I MODE AND Mk II MODE ................................................ 16
4.1 Differences between Mk I Mode and Mk II Mode .................................................................... 16
4.2 Setting Method of Stack Bank Select Register (SBS) ........................................................... 17
5. MEMORY CONFIGURATION ............................................................................................................. 18
6. PERIPHERAL HARDWARE FUNCTION ........................................................................................... 23
6.1 Port ............................................................................................................................................. 23
6.2 Clock Generator ........................................................................................................................23
6.3 Subsystem Clock Oscillator Control Function ...................................................................... 25
6.4 Clock Output Circuit ................................................................................................................. 26
6.5 Basic Interval Timer/Watchdog Timer ..................................................................................... 27
6.6 Watch Timer ..............................................................................................................................28
6.7 Timer/Event Counter .................................................................................................................29
6.8 Serial Interface .......................................................................................................................... 32
6.9 A/D Converter ............................................................................................................................ 33
6.10 Bit Sequential Buffer ................................................................................................................ 34
7. INTERRUPT FUNCTION AND TEST FUNCTION .............................................................................. 35
8. STANDBY FUNCTION ........................................................................................................................37
9. RESET FUNCTION ............................................................................................................................. 38
10. MASK OPTION ...................................................................................................................................41
11. INSTRUCTION SET ............................................................................................................................ 42
12. ELECTRICAL SPECIFICATIONS ....................................................................................................... 55
13. CHARACTERISTICS CURVES (REFERENCE VALUES) ................................................................. 68
14. PACKAGE DRAWINGS ...................................................................................................................... 70
15. RECOMMENDED SOLDERING CONDITIONS .................................................................................. 72
4
Data Sheet U10165EJ2V0DS00
µ
PD750064, 750066, 750068, 750064(A), 750066(A), 750068(A)
APPENDIX A.
µ
PD75068, 750068 AND 75P0076 FUNCTIONAL LIST .................................................. 73
APPENDIX B. DEVELOPMENT TOOLS ................................................................................................. 75
APPENDIX C. RELATED DOCUMENTS ................................................................................................. 79
Data Sheet U10165EJ2V0DS00
5
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