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UPD784021GK-BE9のメーカーはNECです、この部品の機能は「16/8-BIT SINGLE-CHIP MICROCOMPUTER」です。 |
部品番号 | UPD784021GK-BE9 |
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部品説明 | 16/8-BIT SINGLE-CHIP MICROCOMPUTER | ||
メーカ | NEC | ||
ロゴ | |||
このページの下部にプレビューとUPD784021GK-BE9ダウンロード(pdfファイル)リンクがあります。 Total 30 pages
DATA SHEET
MOS INTEGRATED CIRCUIT
mPD784020, 784021
16/8-BIT SINGLE-CHIP MICROCOMPUTER
The mPD784021 is a product of the mPD784026 sub-series in the 78K/IV series. It contains various peripheral
hardware such as RAM, I/O ports, 8-bit resolution A/D and D/A converters, timers, serial interface, and interrupt
functions, as well as a high-speed, high-performance CPU.
The mPD784021 is a ROM-less product of the mPD784025 or mPD784026.
The mPD784020 differs from the mPD784021 only in its RAM size: 512 bytes are allocated for the mPD784020,
while 2048 bytes are allocated for the mPD784021.
For specific functions and other detailed information, consult the following user’s manual.
This manual is required reading for design work.
mPD784026 Sub-Series User’s Manual, Hardware : U10898E
78K/IV Series User’s Manual, Instruction
: U10905E
FEATURES
• 78K/IV series
• Pin-compatible with the mPD78234 sub-series
• Minimum instruction execution time: 160 ns
(at 25 MHz)
• Number of I/O ports: 46
• Timer/counters: 16-bit timer/counter ¥ 3 units
16-bit timer ¥ 1 unit
• Serial interface: 3 channels
UART/IOE (3-wire serial I/O) :2 channels
CSI (3-wire serial I/O, SBI) : 1 channel
• PWM outputs: 2
• Standby function
HALT/STOP/IDLE mode
• Clock frequency division function
• Watchdog timer : 1 channel
• A/D converter : 8-bit resolution ¥ 8 channels
• D/A converter : 8-bit resolution ¥ 2 channels
• Supply voltage : VDD = 2.7 to 5.5 V
APPLICATIONS
LBP, automatic-focusing camera, PPC, printer, electronic typewriter, air conditioner, electronic musical instru-
ments, cellular telephone, etc.
This manual describes the mPD784021 unless otherwise specified.
The information in this document is subject to change without notice.
Document No. U11514EJ1V0DS00 (1st edition)
(Previous No. IP-3234)
Date Published July 1996 P
Printed in Japan
The mark H shows major revised points.
©
199960
1 Page mPD784020, 784021
FUNCTIONS
Item
Product
mPD784020
mPD784021
Number of basic instructions 113
(mnemonics)
General-purpose register
8 bits ¥ 16 registers ¥ 8 banks, or 16 bits ¥ 8 registers ¥ 8 banks (memory mapping)
Minimum instruction execution 160 ns/320 ns/640 ns/1280 ns (at 25 MHz)
time
Internal
memory
ROM
RAM
None
512 bytes
2048 bytes
Memory space
Program and data: 1M byte
I/O ports
Total
46
Input
8
Input/output 34
Output
4
Additional
function
pinsNote
Pins with pull- 32
up resistor
LED direct 8
drive outputs
Transistor
direct drive
8
Real-time output ports
4 bits ¥ 2, or 8 bits ¥ 1
Timer/counter
Timer/counter 0:
(16 bits)
Timer register ¥ 1
Capture register ¥ 1
Compare register ¥ 2
Pulse output capability
Ý Toggle output
Ý PWM/PPG output
Ý One-shot pulse output
Timer/counter 1:
(8/16 bits)
Timer register ¥ 1
Capture register ¥ 1
Capture/compare register ¥ 1
Compare register ¥ 1
Pulse output capability
Ý Real-time output (4 bits ¥ 2)
Timer/counter 2:
(8/16 bits)
Timer register ¥ 1
Capture register ¥ 1
Capture/compare register ¥ 1
Compare register ¥ 1
Pulse output capability
Ý Toggle output
Ý PWM/PPG output
Timer 3
(8/16 bits)
: Timer register ¥ 1
Compare register ¥ 1
PWM outputs
12-bit resolution ¥ 2 channels
Serial interface
UART/IOE (3-wire serial I/O) : 2 channels (incorporating baud rate generator)
CSI (3-wire serial I/O, SBI) : 1 channel
A/D converter
8-bit resolution ¥ 8 channels
D/A converter
8-bit resolution ¥ 2 channels
Watchdog timer
1 channel
Standby
HALT/STOP/IDLE mode
Interrupt
Source
23 (16 internal, 7 external (sampling clock variable input: 1)) + BRK instruction
Software
BRK instruction
Nonmaskable 1 internal, 1 external
Maskable
15 internal, 6 external
Ý 4-level programmable priority
Ý 3 operation statuses: vectored interrupt, macro service, context switching
Supply voltage
VDD = 2.7 to 5.5 V
Package
80-pin plastic QFP (14 ¥ 14 mm)
80-pin plastic TQFP (fine pitch) (12 ¥ 12 mm): for the mPD784021 only
Note Additional function pins are included in the I/O pins.
H
H
3
3Pages mPD784020, 784021
H 1. DIFFERENCES BETWEEN mPD784026 SUB-SERIES
The only difference between the mPD784020, mPD784021, mPD784025, and mPD784026 is their capacity of
internal memory, port functions, and part of their packages.
The mPD78P4026 is produced by replacing the masked ROM in the mPD784025 or mPD784026 with 64K-byte one-
time PROM or EPROM. Table 1-1 shows the differences between these products.
Table 1-1 Differences between the mPD784026 Sub-Series
Item
Product
mPD784020
mPD784021
mPD784025
mPD784026
mPD78P4026
Internal ROM
None
48K bytes
(masked ROM)
64K bytes
(masked ROM)
64K bytes
(one-time PROM
or EPROM)
Internal RAM
512 bytes
2048 bytes
P40-P47
Functions only as an address/data bus
Can be switched to a general-purpose port or address/data
bus, by using software
P50-P57
P60-P63
Functions only as an address bus
Can be switched to an output-only port
or address bus in units of 2 bits, by
using software
Can be switched to a general-purpose port or address bus in
units of 2 bits, by using software
P64, P65
Functions only as the RD or WR pin
Functions as the RD or WR pin when the local bus interface
is used. Functions as a general-purpose port in other cases.
Package
80-pin plastic QFP 80-pin plastic QFP 80-pin plastic QFP (14 ¥ 14 mm)
(14 ¥ 14 mm)
(14 ¥ 14 mm)
80-pin plastic QFP
(14 ¥ 14 mm)
80-pin plastic
TQFP (fine pitch)
(12 ¥ 12 mm)
80-pin ceramic
WQFN
(14 ¥ 14 mm)
6
6 Page | |||
ページ | 合計 : 30 ページ | ||
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部品番号 | 部品説明 | メーカ |
UPD784021GK-BE9 | 16/8-BIT SINGLE-CHIP MICROCOMPUTER | NEC |