UPD78F9418
Description
PRELIMINARY PRODUCT INFORMATION
MOS INTEGRATED CIRCUIT
µPD78F9418
8-BIT SINGLE-CHIP MICROCONTROLLER
The µPD78F9418 is µPD789417 sub-series product (LCD driver) of the 78K/0S series.
This microcontroller features an 8-bit CPU, LCD controller/driver, I/O ports, timers, a serial interface, A/D
converters, a comparator, and interrupt control circuits.
The µPD78F9418 replaces the internal masked ROM of the µPD789415, µPD789416, and µPD789417 with flash
memory, which enables the writing/erasing of a program while the device is mounted on the board.
The functions of this microcontroller is described in the following user’s manuals.
Refer to these manuals
when designing a system based on this microcontroller.
µPD789407 and µPD789417 Sub-Series User’s Manual : To be released soon
78K/0S Series User’s Manual, Instruction
: U11047E
FEATURES
• Pin-compatible with masked ROM product (other than VPP pin) • Flash memory: 32 Kbytes • Internal data memory
• High-speed RAM: 512 bytes • RAM for LCD display data: 28 bytes • Variable instruction execution time: From high-speed (0.
4 µs with the main system clock running at 5.
0 MHz) to ultra-low speed (122 µs with the subsystem clock running at 32.
768 kHz) • 43 I/O ports • Serial interface channel: Switchable between three-wire serial I/O and UART modes • LCD controller/driver: • Up to 28 segment signal outputs • Up to 4 common signal outputs • Bias switchable between 1/2 and 1/3 • Seven A/D converters with an 10-bit resolution • Six timers: • 16-bit timer/counter • Two 8-bit timer/event counters • 8-bit timer/counter • Clock timer • Watchdog timer • Power supply voltage VDD: 1.
8 to 5.
5 V
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.
Document No.
U12321EJ1V0PM00 (1st edition) Date Published August 1997 J Pri...
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