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uPD789841のメーカーはNEC Electronicsです、この部品の機能は「8-BIT Single-chip MICROCONTROLLERS」です。 |
部品番号 | uPD789841 |
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部品説明 | 8-BIT Single-chip MICROCONTROLLERS | ||
メーカ | NEC Electronics | ||
ロゴ | |||
このページの下部にプレビューとuPD789841ダウンロード(pdfファイル)リンクがあります。 Total 30 pages
PRELIMINARY PRODUCT INFORMATIONwww.DataSheet4U.com
MOS INTEGRATED CIRCUIT
µPD789841, 789842
8-BIT SINGLE-CHIP MICROCONTROLLERS
The µPD789841 and µPD789842 are µPD789842 subseries products of the 78K/0S series.
These microcontrollers incorporate an inverter control timer being suitable for controlling general-purpose
inverters.
The µPD78F9842, a product with on-chip flash memory which can operate on the same supply voltage as for
masked ROM products and various development tools are also under development.
Detailed descriptions of their functions, etc., are given in the following user's manuals. Be sure to
read them for design purposes.
µPD789842 Subseries User's Manual : To be prepared
78K/0S Series User's Manual, Instruction : U11047E
FEATURES
• On-chip ROM and RAM
Product name
µPD789841
µPD789842
Item
Program memory
(ROM)
8K bytes
16K bytes
Data memory
(Internal high-speed RAM)
Package
256 bytes
44-pin plastic QFP (10 × 10 mm)
• Minimum instruction execution time can be switched between high speed (0.24 µs) and low speed (0.96 µs)
(when the system clock operates at 8.38 MHz).
• I/O port: 30
• Timer: 6 channels
• 10-bit inverter control timer : 1 channel
• 8-bit timer/event counter : 2 channels
• 8-bit timer counter
: 1 channel
• Watch timer
: 1 channel
• Watchdog timer
: 1 channel
• 8-bit resolution A/D converter: 8 channels
• Serial interface (UART00): 1 channel
• Multiplier: 10 bits × 10 bits = 20 bits
• SWAP: The contents of the high-order four bits of an 8-bit register can be exchanged with the low-order four
bits.
• Vectored interrupt source: 14
• Supply voltage: VDD = 4.0 to 5.5 V
APPLICATIONS
Inverter-driven air conditioners, 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.
Document No. U13790EJ1V0PM00 (1st edition)
Date Published November 1998 J CP(K)
Printed in Japan
©
1998
1 Page µPD789ww8w4.D1ata,Sh7eet84U9.co8m42
78K/0S SERIES DEVELOPMENT
The 78K/0S series products are shown below. The subseries names are indicated in frames.
Products in mass production
Products under development
44-pin
42/44-pin
28-pin
For small-scale general-purpose applications
µPD789046
µPD789026
µPD789014
On-chip subsystem clock of the µPD789026.
Enhanced a timer of the µPD789014 and expanded ROM and RAM.
On-chip UART, capable of operating at low voltage (1.8 V).
78K/0S
Series
44/48-pin
44/48-pin
44-pin
44-pin
30-pin
30-pin
28/30-pin
28/30-pin
28/30-pin
28/30-pin
44-pin
For small-scale general-purpose applications + A/D
µPD789217AY
µPD789197AY
µPD789177
µPD789167
µPD789156
µPD789146
µPD789134A
µPD789124A
µPD789114A
µPD789104A
RC oscillator version of the µPD789197AY.
On-chip EEPROMTM and SMB of the µPD789177.
Enhanced A/D of the µPD789167.
Enhanced a timer of the µPD789104A.
Enhanced A/D of the µPD789146.
Added EEPROM to the µPD789104A.
Enhanced A/D of the µPD789124A.
RC-oscillator version of the µPD789104A.
Enhanced A/D of the µPD789104A.
Added an A/D and multiplier to the µPD789026.
For inverter control
µPD789842
On-chip inverter control circuit and UART.
80-pin
80-pin
88-pin
44-pin
5-pin
42/44-pin
For LCD drive
µPD789417A
µPD789407A
µPD789830
For ASSP
µPD789840
µPD789810
µPD789800
Enhanced A/D of the µPD789407A.
Added A/D to the µPD789026 and enhanced a timer.
On-chip UART and dot LCD.
For a keypad, with on-chip POC.
For an IC card, with on-chip security circuit.
For a PC keyboard, with on-chip USB function.
Preliminary Product Information
3
3Pages µPD789ww8w4.D1ata,Sh7eet84U9.co8m42
CONTENTS
1. PIN CONFIGURATION (TOP VIEW) ................................................................................................ 7
2. BLOCK DIAGRAM............................................................................................................................ 8
3. PIN FUNCTIONS............................................................................................................................... 9
3.1 Port Pins..................................................................................................................................................9
3.2 Non-Port Pins.........................................................................................................................................10
3.3 Pin Input/Output Circuits and Handling of Unused Pins ...................................................................11
4. MEMORY SPACE ............................................................................................................................ 13
5. PERIPHERAL HARDWARE FUNCTIONS ...................................................................................... 14
5.1 Ports .......................................................................................................................................................14
5.2 Clock Generator.....................................................................................................................................14
5.3 Timer.......................................................................................................................................................15
5.4 A/D Converter ........................................................................................................................................18
5.5 Serial Interface.......................................................................................................................................18
5.6 Multiplier.................................................................................................................................................19
5.7 Swapping (SWAP) .................................................................................................................................19
6. INTERRUPT FUNCTION ................................................................................................................. 20
7. STANDBY FUNCTION..................................................................................................................... 22
8. RESET FUNCTION .......................................................................................................................... 22
9. INSTRUCTION SET OVERVIEW..................................................................................................... 23
9.1 Legend ...................................................................................................................................................23
9.2 Operations..............................................................................................................................................25
10. ELECTRICAL CHARACTERISTICS ............................................................................................... 30
11. PACKAGE DRAWING ..................................................................................................................... 37
APPENDIX A DEVELOPMENT TOOLS .............................................................................................. 39
APPENDIX B RELATED DOCUMENTS .............................................................................................. 40
6 Preliminary Product Information
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 |
uPD789841 | 8-BIT Single-chip MICROCONTROLLERS | NEC Electronics |
uPD789842 | 8-BIT Single-chip MICROCONTROLLERS | NEC Electronics |