ATAR080_14 Datasheet, PDF (1/68 Pages) ATMEL Corporation – Very Low Power Consumption in Active, Power-down and Sleep Mode

Features/Benefits
• Very Low Power Consumption in Active, Power-down and Sleep Mode
• 2-Kbyte ROM, 256 × 4-bit RAM
• 12 Bi-directional I/Os
• Up to 6 External/Internal Interrupt Sources
• Multifunction Timer/Counter
• Programmable System-clock with Prescaler and Five Different Clock Sources
• Wide Supply-voltage Range (1.8 V to 6.5 V)
• Very Low Sleep Current (< 1 µA)
• Synchronous Serial Interface (2-wire, 3-wire)
• Watchdog, POR and Brown-out Function
• Voltage Monitoring Inclusive Lo_BAT Detection
• Flash Controller ATAM893 available (SSO20)
Description
The ATAR080 is a member of Atmel’s family of 4-bit single-chip microcontrollers. It
contains ROM, RAM, parallel I/O ports, one 8-bit programmable multifunction
timer/counter with modulator function, voltage supervision, interval timer with watch-
dog function and a sophisticated on-chip clock generation with external clock input,
integrated RC-, 32-kHz and 4-MHz crystal-oscillators.
Figure 1. Block Diagram
VSS VDD
NRST/
OSC1 OSC2
Low-current
Microcontroller
for Wireless
Communication
ATAR080
BP20/NTE
BP21
BP22
BP23
Brown-out
protect RESET
Voltage Monitor
External input
VMI
RC
Crystal External
oscillators oscillators clock input
Clock management
ROM
RAM
2 K × 8 bit 256 × 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
SC
BP41 BP43
VMI
INT3
T2I
SD
BP50 BP52
INT6 INT1
BP51 BP53
INT6 INT1
Rev. 4675D–4BMCU–12/04