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参数资料
| 型号： | M44C092 |
| 厂商： | ATMEL CORP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 4-BIT, MROM, 4 MHz, MICROCONTROLLER, PDSO20 |
| 封装： | SSO-20 |
| 文件页数： | 1/84页 |
| 文件大小： | 643K |
| 代理商： | M44C092 |
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M44C892
M44C892
M44C092
Rev. A5, 14-Dec-01
1 (84)
Low-Current Microcontrollers for Wireless Communication
The M44C092 and M44C892 are members of Atmels family of 4-bit single-chip microcontrollers. They offer highest
integration for IR and RF data communication, remote-control and phase-control applications. The M44C092 and
M44C892are suitable for the transmitter side as well as the receiver side. It contains ROM, RAM, parallel I/O ports,
two 8-bit programmable multifunction timer/counters with modulator and demodulator function, voltage supervisor,
interval timer with watchdog function and a sophisticated on-chip clock generation with external clock input, inte-
grated RC-, 32-kHz crystal- and 4-MHz crystal-oscillators. The M44C892 has an additional EEPROM as a second chip
in one package.
Features / Benefits
D 4-Kbyte ROM, 256 x 4-bit RAM
D 16 bidirectional I/Os
D Up to 7 external / internal interrupt sources
D Multifunction timer/counter with
–
IR remote control carrier generator
–
Biphase-, Manchester- and pulse-width modulator
and demodulator
–
Phase control function
D Programmable system-clock with prescaler and five
different clock sources
D Wide supply voltage range (1.8 to 6.5 V)
D Very low sleep current (< 1 A)
D 32 x 16-bit EEPROM (M44C892 only)
D Synchronous serial interface (2-wire, I2C, 3-wire)
D Watchdog, POR and brown-out function
D Voltage monitoring incl. Lo_BAT detect
D Flash controller T48C893 available (SSO20)
Voltage monitor
External input
MARC4
UTCM
OSC1
OSC2
I/O bus
ROM
RAM
4-bit CPU core
256 x 4 bit
VDD
VSS
13361
Data direction +
alternate function
Data direction +
interrupt control
Port 4
Port 5
Data dir. +
alt. function
Port 6
Timer 3
Brown-out protect.
RESET
Clock management
Timer 1
watchdog timer
Timer 2
Serial interface
Port 1
Port
2
Data
direction
T2O
SD
SC
T3O
T3I
BP10
BP13
BP20/NTE
BP21
BP22
BP23
BP40
INT3
SC BP41
VMI
T2I
BP42
T2O BP43
INT3
SD
BP50
INT6
BP51
INT6
BP52
INT1
BP53
INT1
BP60
T3O
BP63
T3I
RC
oscillators
Crystal
oscillators
4 K x 8 bit
VMI
with modulator
SSI
External
clock input
interval- and
8/12-bit timer
8-bit
timer / counter
with modulator
and demodulator
T2I
Figure 1. Block diagram M44C092 / M44C892
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