ATAR090-C Datasheet, PDF (1/80 Pages) ATMEL Corporation – Low-current Microcontroller for Wireless Communication

Features
• Extended Temperature Range for High Temperature up to 105°C
• 2-Kbyte ROM, 256 × 4-bit RAM
• 12 Bi-directional I/Os
• Up to 6 External/Internal Interrupt Sources
• Multifunction Timer/Counter with
– IR Remote Control Carrier Generator
– Bi-phase-, Manchester- and Pulse-width Modulator
• 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)
• 32 × 16-bit EEPROM (ATAR890-C only)
• Synchronous Serial Interface (2-wire, 3-wire)
• Watchdog, POR and Brown-out Function
• Voltage Monitoring Inclusive Lo_BAT Detection
• Flash Controller T48C893 Available (SSO20)
Description
The ATAR090-C and ATAR890-C are members of Atmel’s family of 4-bit single-chip
microcontrollers. They offer the highest integration for IR and RF data communication
and remote-control. The ATAR090-C and ATAR890-C are suitable for the transmitter
side. They contain ROM, RAM, parallel I/O ports, two 8-bit programmable multifunc-
tion 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, integrated RC-, 32-kHz crystal- and 4-MHz crystal-oscilla-
tors. The ATAR890-C has an additional EEPROM as a second chip in one package.
Figure 0-1.
Block Diagram
V_SS V_DD
OSC1 OSC2
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
T2I
8/12-bit timer T2O
with modulator _SD
SSI
SC
Serial interface
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
Low-current
Microcontroller
for Wireless
Communication
ATAR090-C
ATAR890-C
Rev. 4700C–4BMCU–02/05