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2.
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PRELIMINARY PRODUCT INFORMATION
µ
PD789870, 789871
8-BIT SINGLE-CHIP MICROCONTROLLER
MOS INTEGRATED CIRCUIT
The
µ
PD789870 and
µ
PD789871 are
µ
PD789871 Subseries product (Driving VFD) of the 78K/0S Series.
The
µ
PD789871 Subseries consists of products that incorporate a VFD controller/driver for panel control.
A flash memory version, the
µ
PD78F9872, which can operate in the same power supply voltage range as the mask
ROM version, and various development tools are also under development.
Detailed function descriptions are provided in the following user’s manuals. Be sure to read them before
designing.
To be prepared
µ
PD789871 Subseries User’s Manual:
78K/0S Series User's Manual Instruction: U11047E
FEATURES
• Internal ROM and RAM
Item
Part Number
Program Memory
(ROM)
4 KB
8 KB
Data Memory
Internal High-Speed RAM
512 bytes
VFD Display RAM
96 bytes
µ
PD789870
µ
PD789871
• Minimum instruction execution time can be changed from high-speed (0.4
µ
s: Main system clock 5.0-MHz
operation) to ultra-low speed (122
µ
s: Subsystem clock 32.768-kHz operation)
• I/O ports: 33
• Timers: 5 channels
• 8-bit remote control: 1 channel
• 8-bit timer/event counter: 2 channels
• Watch timer: 1 channel
• Watchdog timer: 1 channel
• Serial interface: 1 channel
• VFD controller/driver: Total of display outputs: 25
• Power supply voltage : V
DD
= 2.7 to 5.5 V (in normal operation)
: V
DD
= 4.5 to 5.5 V (when VFD is operating)
APPLICATIONS
Products with front panel such as DVD, VCD, S-VCD players etc.
The information contained in this document is being issued in advance of the production cycle for the
device. The parameters for the device may change before final production or NEC Corporation, at its own
discretion, may withdraw the device prior to its production.
Not all devices/types available in every country. Please check with local NEC representative for
availability and additional information.
Document No. U14916EJ1V0PM00 (1st edition)
Date Published December 2000 N CP(K)
Printed in Japan
©
2000
µ
PD789870, 789871
78K/0S SERIES DEVELOPMENT
The products in the 78K/0S Series are listed below. The names enclosed in boxes are subseries names.
Products in mass production
Products under development
Y subseries supports SMB.
Small-scale package, general-purpose applications
44-pin
42-/44-pin
30-pin
28-pin
µ
PD789046
µ
PD789026
µ
PD789074
µ
PD789014
µ
PD789074 with subsystem clock
µ
PD789014 with enhanced timer function and expanded ROM and RAM
µ
PD789026 with enhanced timer function
On-chip UART and capable of low-voltage (1.8 V) operation
Small-scale package, general-purpose applications and A/D function
44-pin
44-pin
30-pin
30-pin
30-pin
30-pin
30-pin
30-pin
µ
PD789177
µ
PD789167
µ
PD789156
µ
PD789146
µ
PD789134A
µ
PD789124A
µ
PD789114A
µ
PD789104A
Inverter control
µ
PD789177Y
µ
PD789167Y
µ
PD789167 with enhanced A/D converter
µ
PD789104A with enhanced timer
µ
PD789146 with enhanced A/D converter
µ
PD789104A with EEPROM
TM
added
µ
PD789124A with enhanced A/D
RC oscillation version of
µ
PD789104A
µ
PD789104A with enhanced A/D converter
µ
PD789026 with A/D converter and multiplier
44-pin
78K/0S
Series
52-pin
µ
PD789842
On-chip inverter controller and UART
VFD drive
µ
PD789871
Total of display outputs: 25
LCD drive
80-pin
80-pin
80-pin
64-pin
64-pin
64-pin
64-pin
64-pin
64-pin
µ
PD789488
µ
PD789417A
µ
PD789407A
µ
PD789456
µ
PD789446
µ
PD789436
µ
PD789426
µ
PD789316
µ
PD789306
Dot LCD drive
A/D converter and internal voltage boosting method LCD (28
×
4)
µ
PD789407A with enhanced A/D converter
A/D converter and resistance division method LCD (28
×
4)
µ
PD789446 with enhanced A/D converter
A/D converter and internal voltage boosting method LCD (15
×
4)
µ
PD789426 with enhanced A/D converter
A/D converter and internal voltage boosting method LCD (5
×
4)
RC oscillation version of
µ
PD789306
Internal voltage boosting method LCD (24
×
4)
144-pin
88-pin
µ
PD789835
µ
PD789830
ASSP
Segment/common outputs: 96 pins
Segment: 40 pins, common: 16 pins
80-pin
52-pin
52-pin
44-pin
44-pin
20-pin
20-pin
µ
PD789477
µ
PD789467
µ
PD789327
µ
PD789803
µ
PD789800
µ
PD789840
µ
PD789861
µ
PD789860
µ
PD789488 with remote controller receive circuit added and resistance division method LCD
For remote controller. On-chip A/D converter and internal voltage boosting method LCD
For remote controller. On-chip SIO and resistance division method LCD
For PC keyboard. On-chip USB HUB function
For PC keyboard. On-chip USB function
For key pad. On-chip POC
RC oscillation version of
µ
PD789860
For keyless entry. On-chip POC and key return circuit
Preliminary Product Information U14916EJ1V0PM
3