ATAR892_14 Datasheet, PDF (1/107 Pages) ATMEL Corporation – Bi-phase-, Manchester- and Pulse-width Modulator and Demodulator

Features
• 4-Kbyte ROM, 256 × 4-bit RAM
• 16 Bidirectional I/Os
• Up to 7 External/Internal Interrupt Sources
• Multifunction Timer/Counter with
• IR Remote Control Carrier Generator
• Bi-phase-, Manchester- and Pulse-width Modulator and Demodulator
• Phase Control Function
• Programmable System Clock with Prescaler and Five Different Clock Sources
• Wide Supply-voltage Range (1.8V to 6.5V)
• Very Low Sleep Current (< 1 µA)
• 32 × 16-bit EEPROM (ATAR092 only)
• Synchronous Serial Interface (2-wire, 3-wire)
• Watchdog, POR and Brown-out Function
• Voltage Monitoring Inclusive Lo_BAT Detect
• Flash Controller ATAM893 Available (SSO20)
Low-current
Microcontroller
for Wireless
Communication
1. Description
The ATAR092 and ATAR892 are members of Atmel^®’s family of 4-bit single-chip
microcontrollers. They offer highest integration for IR and RF data communication,
remote-control and phase-control applications. The ATAR092 and ATAR892 are suit-
able for the transmitter side as well as the receiver side. They contain ROM, RAM,
parallel I/O ports, two 8-bit programmable multifunction 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-oscillators. The ATAR892 has an additional
EEPROM as a second chip in one package.
Figure 1-1. Block Diagram
V_SS V_DD
OSC1 OSC2
BP10
BP13
BP20/NTE
BP21
BP22
BP23
Brown-out Protect
RESET
Voltage Monitor
External Input
VMI
Port 1
RC
Crystal
External
Oscillators Oscillators Clock Input
Clock Management
ROM
4 K x 8 bit
RAM
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
Timer 3
8-bit
Timer/Counter
with Modulator
and Demodulator
T3O
T3I
Data Direction +
Alternate Function
Port 4
Data Direction +
Interrupt Control
Port 5
Data Direction +
Alternate Function
Port 6
ATAR092
ATAR892
BP40 BP42
INT3 T2O
SC
BP41 BP43
VMI
INT3
T2I
SD
BP50
INT6
BP52
INT1
BP51
INT6
BP53
INT1
BP60
T3O
BP63
T31
4535E–4BMCU–05/07