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ATA6020N Datasheet

  • ATA6020N

  • ATA6020N [Updated 6/03. 58 Pages]Programmable Watchdog

  • 58頁

  • ETC

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Features/Benefits
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Programmable System Clock with Prescaler and Five Different Clock Sources
Very Low Sleep Current (< 1 碌A(chǔ))
Very Low Power Consumption in Active, Power-down and Sleep Mode
2-Kbyte ROM, 256
脳
4-bit RAM
12 Bi-directional I/Os
Up to 6External/Internal Interrupt Sources
Synchronous Serial Interface (2-wire, 3-wire)
Multifunction Timer/Counter with
鈥?Watchdog, POR and Brown-out Function
鈥?Voltage Monitoring Inclusive Lo_BAT Detection
鈥?Flash Controller ATAM893 Available (SSO20)
鈥?Code-efficient Instruction Set
鈥?High-level Language Programming with qFORTH Compiler
Description
The ATA6020N is a member of Atmel鈥檚 4-bit single-chip microcontroller family. It con-
tains ROM, RAM, parallel I/O por ts, 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 and
integrated RC-oscillators.
Figure 1.
Block Diagram
V SS V DD
OSC1
Low-current
Microcontroller
for Watchdog
Function
ATA6020N
Brown-out protect.
RESET
Voltage monitor
External input
VMI
RC
oscillators
External
clock input
UTCM
Timer 1
interval- and
watchdog timer
Clock management
ROM
2 K x 8 bit
RAM
256 x 4 bit
Timer 2
8/12-bit timer
with modulator
T2I
T2O
SD
Data direction
BP20/NTE
Port 2
BP21
BP22
BP23
MARC4
4-bit CPU core
I/O bus
SSI
Serial interface
SC
Data direction +
alternate function
Port 4
Data direction +
interrupt control
Port 5
BP40
INT3
SC
BP42
T2O
BP41
VMI
T2I
BP43
INT3
SD
BP50
INT6
BP52
INT1
BP53
INT1
BP51
INT6
Rev. 4708A鈥?BMCU鈥?6/03
1

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