UPD780204 datasheet(24/418 Pages) NEC

Part #	UPD780204

Description	8-Bit Single-Chip Microcontrollers

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Manufacturer	NEC [NEC]

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

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24

User’s Manual U11302EJ4V0UM

CHAPTER 1

OUTLINE

1.1 Features

Internal high-capacity ROM and RAM

Item

Program Memory

Data Memory

Part

ROM

PROM

Internal High-

Buffer RAM

VFD Display

Internal

Number

Speed RAM

RAM

Expansion RAM

µPD780204

32 KB

—

1024 bytes

64 bytes

80 bytes

None

µPD780204A

µPD780205

40 KB

—

µPD780205A

µPD780206

48 KB

—

1024 bytes

µPD780208

60 KB

—

µPD78P0208

—

60 KBNote 1

1024 bytesNote 2

Notes 1. 32, 40, 48, or 60 KB can be selected by setting the internal memory size switching register (IMS).

2. 0 or 1024 bytes can be selected by setting the internal expansion RAM size switching register (IXS).

Minimum instruction execution time can be changed from high speed (0.4

µs: @ 5.0 MHz operation with main

system clock) to ultra-low speed (122

µs: @ 32.768 kHz operation with subsystem clock)

74 I/O ports

VFD controller/driver: 53 display outputs in total

• Segments: 9 to 40

• Digits: 2 to 16

8-bit resolution A/D converter: 8 channels

• Power supply voltage (AVDD = 4.0 to 5.5 V)

Serial interface: 2 channels

• 3-wire serial I/O/SBI/2-wire serial I/O mode: 1 channel

• 3-wire serial I/O mode (automatic transmit/receive function): 1 channel

Timer: 5 channels

• 16-bit timer/event counter: 1 channel

• 8-bit timer/event counter: 2 channels

• Watch timer: 1 channel

• Watchdog timer: 1 channel

15 vectored interrupt sources

One test input

Two types of on-chip clock oscillators (for main and subsystem clocks)

Power supply voltage: VDD = 2.7 to 5.5 V

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UPD780204 Datasheet(PDF) 24 Page - NEC

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