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M44C890-H fiches techniques PDF

ATMEL Corporation - (M44C890-H / M44C090-H) Low Current Microcontroller for Wireless Communication

Numéro de référence M44C890-H
Description (M44C890-H / M44C090-H) Low Current Microcontroller for Wireless Communication
Fabricant ATMEL Corporation 
Logo ATMEL Corporation 





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M44C890-H fiche technique
M44C090-H
M44C890-H
Low-Current Microcontroller for Wireless Communication
The M44C090-H and M44C890-H are members of Atmels family of 4-bit single-chip microcontrollers. They offer
highest integration for IR and RF data communication and remote-control applications. The M44C090-H /
M44C890-H is suitable for the transmitter side. It contains ROM, RAM, parallel I/O ports, one 8-bit programmable
multifunction timer/counter with modulator function, voltage supervisor, interval timer with watchdog function and
a sophisticated on-chip clock generation with external clock input, integrated RC-, 32-kHz crystal- and 4-MHz crystal-
oscillators. The M44C890-H has an additional EEPROM as a second chip in one package.
Features / Benefits
D Extended temperature range for high temperature up
to 105_C
D 2-Kbyte ROM, 256 x 4-bit RAM
D 12 bidirectional I/Os
D Up to 6 external / internal interrupt sources
D Multifunction timer/counter with
– IR remote control carrier generator
– Biphase-, Manchester- and pulse-width modulator
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 µA)
D 32 x 16-bit EEPROM (M44C890-H 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)
VSS VDD
OSC1 OSC2
BP20/NTE
BP21
BP22
BP23
Brown-out protect.
RESET
Voltage monitor
External input
VMI
RC Crystal External
oscillators oscillators clock input
Clock management
ROM
2 K x 8 bit
RAM
256 x 4 bit
MARC4
4-bit CPU core
I/O bus
UTCM
Timer 1
interval- and
watchdog timer
Timer 2
8/12-bit timer
with modulator
SSI
Serial interface
T2I
T2O
SD
SC
Data direction +
alternate function
Port 4
Data direction +
interrupt control
Port 5
BP40 BP42
INT3 T2O BP43
SC BP41 INT3
VMI SD
T2I
BP50 BP52
INT6 INT1
BP51 BP53
INT6 INT1
Figure 1. Block diagram M44C090-H/M44C890-H
13389
Rev.A3, 14-Dec-01
1 (63)

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