ATAR080-D_14 Datasheet, PDF (1/68 Pages) ATMEL Corporation – Very Low Power Consumption in Active, Power-down and Sleep Mode

Features/Benefits
• Extended Temperature Range for Very High Temperature up to 125°C
• 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 Detect
• Flash Controller ATAM893 Available (SSO20)
Description
The ATAR080-D 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 supervisor, interval timer with watchdog
function and a sophisticated on-chip clock generation with external clock input, inte-
grated RC-, 32-kHz and 4-MHz crystal-oscillators.
Figure 1. Block Diagram
V_SS V_DD
NRST/
OSC1 OSC2
Low-current
Microcontroller
for Wireless
Communication
ATAR080-D
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 x 8 bit 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
SC
BP41
BP43
VMI
INT3
T2I
SD
BP50
INT6
BP52
INT1
BP51
INT6
BP53
INT1
Rev. 4676D–4BMCU–12/04