DATA SHEET
µ
PD75064, 75066, 75068,
75064(A), 75066(A), 75068(A)
4-BIT SINGLE-CHIP MICROCOMPUTER
MOS INTEGRATED CIRCUIT
The
µ
PD75068 is a member of the 75X series of 4-bit single-chip microcomputers.
The minimum instruction execution time of the
µ
PD75068's CPU is 0.95
µ
s. In addition to this high-speed
capability, the chip contains an A /D converter and furnishes high-performance functions such as the serial
bus interface (SBI) function compliant with the NEC standard format, providing powerful features and high
cost performance. The
µ
PD75068(A) is a high-reliability version of the
µ
PD75068.
NEC also provides PROM versions suitable for small-scale production or evaluation samples in system
development. The
µ
PD75P068 is the PROM version for the
µ
PD75064, 75066, 75068, and the
µ
PD75P068(A)
is that for the
µ
PD75064(A), 75066(A), 75068(A).
The detailed function descriptions are described in the document below. Please make sure to read this
document before starting design.
µ
PD75068 User's Manual: IEU-1366
FEATURES
•
Variable instruction execution time advantageous to high-speed operation and power-saving:
•
•
•
0.95
µ
s, 1.91
µ
s, or 15.3
µ
s (at 4.19 MHz with the main system clock selected)
122
µ
s (at 32.768 kHz with the subsystem clock selected)
Capable of low-voltage operation: V
DD
= 2.7 to 6.0 V
•
A /D converter (8-bit resolution, successive approximation): 8 channels
•
•
•
•
•
Timer function: 3 channels
On-chip NEC standard serial bus interface (SBI)
Very low-power watch operation enabled (5
µ
A TYP. at 3 V)
Pull-up resistor option allowed for 27 I/O lines
The
µ
PD75P068 and 75P068(A) (PROM versions) available: Capable of low-voltage operation (V
DD
= 2.7 to
6.0 V)
APPLICATIONS
•
•
µ
PD75064, 75066, 75068
Home electronic appliances, air conditioners, cameras, and electronic measuring instruments
µ
PD75064(A), 75066(A), 75068(A)
Automotive electronics
5
The information in this document is subject to change without notice.
Document No. IC-3140B
( O.D. No. IC-8629B)
Date Published December 1994 P
Printed in Japan
The mark
5
shows revised points.
NEC CORPORATION 1993
µ
PD75064, 75066, 75068, 75064(A), 75066(A), 75068(A)
The
µ
PD75064, 75066, 75068 and
µ
PD75064(A), 75066(A), 75068(A) differ only in their quality grade.
Unless otherwise specified, this data sheet describes the
µ
PD75068 as the representative product.
For products with the suffix (A) attached, please make the following substitutions when reading:
µ
PD75064 —>
µ
PD75064(A)
µ
PD75066 —>
µ
PD75066(A)
µ
PD75068 —>
µ
PD75068(A)
ORDERING INFORMATION
Part number
Package
42-pin
44-pin
42-pin
44-pin
42-pin
44-pin
42-pin
44-pin
42-pin
44-pin
42-pin
44-pin
plastic
plastic
plastic
plastic
plastic
plastic
plastic
plastic
plastic
plastic
plastic
plastic
shrink DIP (600 mil)
QFP (10x10 mm)
shrink DIP (600 mil)
QFP (10x10 mm)
shrink DIP (600 mil)
QFP (10x10 mm)
shrink DIP (600 mil)
QFP (10x10 mm)
shrink DIP (600 mil)
QFP (10x10 mm)
shrink DIP (600 mil)
QFP (10x10 mm)
Quality Grade
Standard
Standard
Standard
Standard
Standard
Standard
Special
Special
Special
Special
Special
Special
5
5
5
5
5
5
µ
PD75064CU-xxx
µ
PD75064GB-xxx-3B4
µ
PD75066CU-xxx
µ
PD75066GB-xxx-3B4
µ
PD75068CU-xxx
µ
PD75068GB-xxx-3B4
µ
PD75064CU(A)-xxx
µ
PD75064GB(A)-xxx-3B4
µ
PD75066CU(A)-xxx
µ
PD75066GB(A)-xxx-3B4
µ
PD75068CU(A)-xxx
µ
PD75068GB(A)-xxx-3B4
Remark
xxx : ROM code suffix
Please refer to “Quality grade on NEC Semiconductor Devices” (Document number IEI-1209) published
by NEC Corporation to know the specification of quality grade on the devices and its recommended
applications.
5
DIFFERENCE BETWEEN
µ
PD7506x SUBSERIES AND
µ
PD7506x(A) SUBSERIES
Part number
µ
PD75064
µ
PD75066
µ
PD75064(A)
µ
PD75066(A)
µ
PD75068(A)
Special
Parameter
Quality grade
µ
PD75068
Standard
2
µ
PD75064, 75066, 75068, 75064(A), 75066(A), 75068(A)
FUNCTION OVERVIEW
Item
Instruction execution time
Function
•
Main system clock : 0.95
µ
s, 1.91
µ
s, 15.3
µ
s (at 4.19 MHz)
•
Subsystem clock : 122
µ
s (at 32.768 kHz)
•
µ
PD75064 : 4096
×
8 bits
•
µ
PD75066 : 6016
×
8 bits
•
µ
PD75068 : 8064
×
8 bits
512
×
4 bits
Internal memory
ROM
RAM
General register
•
When operating in 4 bits:
•
When operating in 8 bits:
32
12
CMOS input
8
4
Of these, seven with software-specifiable on-chip
pull-up resistors
I/O port
12
CMOS I/O
Software-specifiable on-chip pull-up resistors
Four pins can directly drive LEDs.
8
N-ch open-drain I/O
Breakdown voltage: 10 V
Mask-option-specifiable on-chip pull-up resistors
Can directly drive LEDs.
Timer
3 chs.
•
Timer/event counter
•
Basic interval timer : Applicable to watchdog timer
•
Watch timer : Capable of buzzer output
Serial interface
•
3-wire serial I/O mode
•
2-wire serial I/O mode
•
SBI mode
16 bits
Φ
, f
x
/2
3
, f
x
/2
4
, f
x
/2
6
(Main system clock: at 4.19 MHz operation)
Bit sequencial buffer
Clock output function
A/D converter
•
8-bit resolution x 8 channels
•
Low-power operation possible : V
DD
= 2.7 to 6.0 V
External : 3 , Internal : 3
External : 1,
Internal : 1
Vectored interrupt
Test input
System clock oscillator
•
Ceramic/crystal oscillator for main system clock
•
Crystal oscillator for subsystem clock
STOP / HALT mode
–40 to +85
°C
Standby function
Operating ambient
temperature
Operating supply
voltage
Package
2.7 to 6.0 V
•
42-pin plastic shrink DIP (600 mil)
•
44-pin plastic QFP (10 x 10 mm)
3
µ
PD75064, 75066, 75068, 75064(A), 75066(A), 75068(A)
CONTENTS
1. PIN CONFIGURATION (TOP VIEW) ··························································································
2. BLOCK DIAGRAM ························································································································
3. PIN FUNCTIONS ··························································································································
3.1
3.2
3.3
3.4
3.5
Port Pins ···············································································································································
Non-Port Pins ·······································································································································
Pin Input/Output Circuits···················································································································
Mask Option Selection ························································································································
Handling Unused Pins ·························································································································
5
7
8
8
9
10
12
13
4. MEMORY CONFIGURATION ·····································································································
14
5. PERIPHERAL HARDWARE FUNCTIONS ··················································································· 18
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
Ports ······················································································································································
Clock Generator ···································································································································
Clock Output Circuit ····························································································································
Basic Interval Timer ·····························································································································
Watch Timer ·········································································································································
Timer/Event Counter ···························································································································
Serial Interface ·····································································································································
A/D Converter ······································································································································
Bit Sequential Buffer ···························································································································
18
19
20
21
22
23
24
25
26
6. INTERRUPT FUNCTIONS ···········································································································
7. STANDBY FUNCTION ················································································································
8. RESET OPERATION ····················································································································
9. INSTRUCTION SET ····················································································································
10. ELECTRICAL SPECIFICATIONS ·································································································
27
29
30
32
40
11. CHARACTERISTIC CURVES (FOR REFERENCE ONLY) ··························································· 54
12. PACKAGE DRAWINGS ···············································································································
60
13. RECOMMENDED SOLDERING CONDITIONS ··········································································· 62
APPENDIX A.
APPENDIX B.
DEVELOPMENT TOOLS ························································································
RELATED DOCUMENTS ························································································
64
65
4
µ
PD75064, 75066, 75068, 75064(A), 75066(A), 75068(A)
1. PIN CONFIGURATION (TOP VIEW)
• 42-pin plastic shrink DIP
XT1
XT2
RESET
X1
X2
P33
P32
P31
P30
AV
SS
AN7/KR3/P63
AN6/KR2/P62
AN5/KR1/P61
AN4/KR0/P60
AN3/P113
AN2/P112
AN1/P111
AN0/P110
AV
REF
IC
V
DD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
V
SS
P40
P41
P42
P43
P50
P51
P52
P53
P00/INT4
P01/SCK
P02/SO/SB0
P03/SI/SB1
P10/INT0
P11/INT1
P12/INT2
P13/TI0
P20/PTO0
P21
P22/PCL
P23/BUZ
µ
PD75064CU-×××
µ
PD75066CU-×××
µ
PD75068CU-×××
• 44-pin plastic QFP
P110/AN0
P20/PTO0
P23/BUZ
P22/PCL
P13/TI0
AV
REF
P111/AN1
P21
V
DD
44 43 42 41 40 39 38 37 36 35 34
INT2/P12
INT1/P11
INT0/P10
SB1/SI/P03
SB0/SO/P02
SCK /P01
INT4/P00
P53
P52
P51
P50
1
2
3
4
5
6
7
8
9
10
11
12 13 14 15 16 17 18 19 20 21 22
33
32
31
30
29
28
27
26
25
24
23
P112/AN2
P113/AN3
P60/KR0/AN4
P61/KR1/AN5
P62/KR2/AN6
P63/KR3/AN7
AV
SS
P30
P31
P32
P33
µ
PD75064GB-×××-3B4
µ
PD75066GB-×××-3B4
µ
PD75068GB-×××-3B4
XT1
IC
XT2
RESET
X1
NC
P43
P42
P41
IC : Internally Connected (This pin should be directly connected to V
DD
)
P40
V
SS
X2
NC
5
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