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ATAM894 Datasheet

  • ATAM894

  • ATAM894 [Updated 7/03. 95 Pages] 8K Flash microcontroller

  • 1344.64KB

  • 95頁

  • ETC

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Features
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8 K
脳
8-bit EEPROM
EEPROM Programmable Options
Read Protection for the EEPROM Program Memory
256
脳
4-bit RAM
2
脳
32
脳
16-bit Data EEPROM
Up to Seven External/Internal Interrupt Sources
Eight Hardware and Software Interrupt Priorities
16 Bi-directional I/Os
Wide Supply-voltage Range (1.8 V to 6.5 V)
Very Low Sleep Current (< 1 碌A(chǔ))
Synchronous Serial Interface (2-wire, 3-wire)
Multifunction Timer/Counter with Prescaler/Interval Timer
Voltage Monitoring Inclusive Lo_BAT Detect
Watchdog, POR and Brown-out Function
8K-flash
Microcontroller
ATAM894
Preliminary
Description
The ATAM894 is a member of the Atmel鈥檚 family of 4-bit single chip microcontrollers
with 8 K
麓
8-bit EEPROM program memory. It is based on the 4-K MTP version
ATAM893 and fully compatible with this MTP and the ROM versions ATAR090/890 and
ATAR092/892.
Figure 1.
Block Diagram
V SS V DD
OSC1
OSC2
Brown-out protect.
RESET
Voltage monitor
External input
VMI
BP10
Port 1
BP13
BP20/NTE
RC
oscillators
Crystal
oscillators
External
clock input
UTCM
Timer 1
interval- and
watchdog timer
Timer 2
T2I
T2O
SD
Clock management
EEPROM
4 K x 8 bit
RAM
256 x 4 bit
8/12-bit timer
with modulator
SSI
Serial interface
Timer 3
8-bit
timer / counter
with modulator
and demodulator
MARC4
Data direction
Port 2
SC
BP21
BP22
BP23
4-bit CPU core
I/O bus
T3O
T3I
Data direction +
alternate function
Port 4
Data direction +
interrupt control
Port 5
Data direction +
alternate function
Port 6
EEPROM
2 x 32 x 16 bit
BP40
BP42
BP50
BP52
INT3
T2O
INT6
INT1
SC BP41
BP43
BP51
BP53
VMI
INT3
INT6
INT1
T2I
SD
BP60
T3O
BP63
T3I
Rev. 4679B鈥?BMCU鈥?7/03
1

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