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參數資料
| 型號： | μPD789121CT |
| 廠商： | NEC Corp. |
| 英文描述： | 8 Bit Gerneral-Purpose Microcontrollers(8 位通用微控制器) |
| 中文描述： | 8位展會通用微控制器（8位通用微控制器） |
| 文件頁數： | 1/4頁 |
| 文件大小： | 29K |
| 代理商： | ΜPD789121CT |
K0S Family Product Brief
March 1998
Description
The μPD7891xx microcontrollers are new members of NEC’s low-cost K0S 8-bit
microcontroller family. They offer a system clock choice of an RC circuit or resonator,
and are available with an 8- or 10-bit A/D converter. The μPD7891xx family is
fabricated using an 0.35-micron CMOS process for low power consumption and
minimal cost. With 28- or 30-pin package options, these devices are ideal for cost-
sensitive consumer applications needing analog interfaces.
These microcontrollers are supported by an extensive tool chain, compatible across
NEC’s entire K Series line of 8- and 16-bit microcontrollers. The tools contain a
software simulator, C compiler, relocatable assembler, screen debugger, and in-circuit
emulator.
Figure 1. Block Diagram
98YL-0003B (1/98)
16-bit Timer
TM20
CPU &
Macro
Control
Hardware
Multiply
System Registers
– PC
– PSW
– Stack Pointer
ALU
Main Clock
Oscillator
Sytem
Control
4 Channel 8-bit
A/D Converter
CPT20
T020
Clocks and
System Control
ROM
2K, 4K & 8K
RAM
256 bytes
Eight 8-bit
GP Registers
Memory
CPU Core
A
INTP0-INTP2
P
A
A
RESET
CL2
VDD
VSS
IC
CL1
8-bit T/E
Counter 80
TI80
TO80
Watchdog
20 Port Pins
Programmable
Interrupt
P
Timer/Event Counter
Timers
Timers and Counters
16-bit Timer
UART
RxD20/SI20
TxD20/SO20
SCK20
BRG
Serial Channels
UART (SIO20)
μ
PD/
8910x/911x/912x/913x
8-Bit General-Purpose Microcontrollers
With 8- or 10-Bit A/D and RC or Ceramic Oscillator
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