UPD78046H datasheet(4/58 Pages) NEC

Part #	UPD78046H

Description	8-BIT SINGLE-CHIP MICROCOMPUTER

Download	58 Pages

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Manufacturer	NEC [NEC]

Direct Link	http://www.nec.com/

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4

µPD78044H, 78045H, 78046H

FUNCTIONAL OUTLINE

Internal

memory

Item

Product name

Instruction

cycle

ROM

Internal high-speed RAM

FIP display RAM

General registers

8 bits

× 32 registers (8 bits × 8 registers × 4 banks)

Variable instruction execution time

For main system clock

0.4

µs/0.8 µs/1.6 µs/3.2 µs/6.4 µs (at 5.0 MHz)

For subsystem clock

122

µs (at 32.768 kHz)

Instruction set

• Multiplication/division (8 bits

× 8 bits, 16 bits ÷ 8 bits)

• Bit (set, reset, test, Boolean algebra)

I/O ports (including those

Total

: 68 lines

multiplexed with FIP pins)

• CMOS input

:

2 lines

• CMOS I/O

: 19 lines

• N-ch open-drain

: 13 lines

• P-ch open-drain I/O

: 16 lines

• P-ch open-drain output

: 18 lines

FIP controller/driver

Total

: 34 lines

• Segments

: 9 to 24 lines

• Digits

: 2 to 16 lines

A/D converter

• 8-bit resolution

× 8 channels

• Power supply voltage: AVDD = 4.0 to 5.5 V

Serial interface

• 3-wire serial I/O mode

: 1 channel

Timer

• 16-bit timer/event counter : 1 channel

• 8-bit timer/event counter : 2 channels

• Watch timer

: 1 channel

• Watchdog timer

: 1 channel

Timer output

3 lines (one for 14-bit PWM output)

Clock output

19.5 kHz, 39.1 kHz, 78.1 kHz, 156 kHz, 313 kHz, 625 kHz

(main system clock: when operating at 5.0 MHz)

32.768 kHz (subsystem clock: when operating at 32.768 kHz)

Buzzer output

1.2 kHz, 2.4 kHz, 4.9 kHz (main system clock: when operating at 5.0 MHz)

Maskable interrupt

Internal 8 lines, external 4 lines

Non-maskable interrupt

Internal 1 line

Software interrupt

1 line

Text input

Internal 1 line

Power supply voltage

VDD = 2.7 to 5.5 V

Package

80-pin plastic QFP (14

× 20 mm)

Vectored

interrupt

µPD78044H

µPD78045H

µPD78046H

32K bytes

1024 bytes

48 bytes

40K bytes

48K bytes

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