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M44C892

Description
Microcontroller, 4-Bit, MROM, MARC4 CPU, 4MHz, CMOS, PDSO20, SSO-20
CategoryMicrocontrollers and processors   
File Size636KB,84 Pages
ManufacturerAtmel (Microchip)
Download Datasheet Parametric View All

M44C892 Overview

Microcontroller, 4-Bit, MROM, MARC4 CPU, 4MHz, CMOS, PDSO20, SSO-20

M44C892 Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerAtmel (Microchip)
Parts packaging codeSOIC
package instructionLSSOP, SSOP20,.25
Contacts20
Reach Compliance Codeunknown
Is SamacsysN
Has ADCNO
Other featuresOPERATES AT 1.8 TO 6.5V SUPPLY @ 2MHZ
Address bus width
bit size4
CPU seriesMARC4
maximum clock frequency4 MHz
DAC channelNO
DMA channelNO
External data bus width
JESD-30 codeR-PDSO-G20
JESD-609 codee0
length6.625 mm
Number of I/O lines16
Number of terminals20
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
PWM channelYES
Package body materialPLASTIC/EPOXY
encapsulated codeLSSOP
Encapsulate equivalent codeSSOP20,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE, LOW PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)NOT SPECIFIED
power supply1.8/6.5 V
Certification statusNot Qualified
RAM (bytes)128
rom(word)4096
ROM programmabilityMROM
Maximum seat height1.45 mm
speed4 MHz
Maximum supply voltage6.5 V
Minimum supply voltage2.4 V
Nominal supply voltage3 V
surface mountYES
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width4.4 mm
uPs/uCs/peripheral integrated circuit typeMICROCONTROLLER
Base Number Matches1
M44C092
M44C892
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
V SS VDD
D
Wide supply voltage range (1.8 to 6.5 V)
D
Very low sleep current (< 1
µA)
D
32 x 16-bit EEPROM (M44C892 only)
D
Synchronous serial interface (2-wire, I
2
C, 3-wire)
D
Watchdog, POR and brown-out function
D
Voltage monitoring incl. Lo_BAT detect
D
Flash controller T48C893 available (SSO20)
OSC1 OSC2
Brown-out protect.
RESET
Voltage monitor
External input
VMI
BP10
Port 1
BP13
BP20/NTE
Data direction
Port 2
BP21
BP22
BP23
External
RC
Crystal
oscillators oscillators clock input
Clock management
UTCM
Timer 1
interval- and
watchdog timer
Timer 2
8/12-bit timer
with modulator
SSI
Serial interface
Timer 3
8-bit
timer / counter
with modulator
and demodulator
T2I
T2O
SD
SC
T3O
T3I
ROM
4 K x 8 bit
RAM
256 x 4 bit
MARC4
4-bit CPU core
I/O bus
Data direction +
interrupt control
Port 5
Data direction +
alternate function
Port 4
Data dir. +
alt. function
Port 6
BP50
BP52
BP42
BP40
INT1
INT3
T2O BP43 INT6
BP53
BP51
SC BP41
INT3
INT1
VMI
INT6
SD
T2I
BP60
T3O
BP63
T3I
13361
Figure 1. Block diagram M44C092 / M44C892
Rev. A5, 14-Dec-01
1 (84)

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