ATAM862-8_07 Datasheet, PDF (13/110 Pages) ATMEL Corporation – Microcontroller with UHF ASK/FSK Transmitter

ATAM862-8
11. Microcontroller Block
12. Features
• 4-Kbyte ROM, 256 x 4-bit RAM
• EEPROM Programmable Options
• Read Protection for the EEPROM Program Memory
• 11 Bi-directional I/Os
• Up to Seven External/Internal Interrupt Sources
• Eight Hardware and Software Interrupt Priorities
• Multifunction Timer/Counter
- IR Remote Control Carrier Generator
- Biphase-, Manchester- and Pulse-width Modulator and Demodulator
- Phase Control Function
• Programmable System Clock with Prescaler and Five Different Clock Sources
• Very Low Sleep Current (< 1 µA)
• 2 × 512-bit EEPROM Data Memory
• 256 × 4-bit RAM Data Memory
• Synchronous Serial Interface (2-wire, 3-wire)
• Watchdog, POR and Brown-out Function
• Voltage Monitoring Inclusive Lo_BAT Detect
13. Description
The microcontroller is designed with EEPROM cells so it can be programmed several times. To
offer full compatibility with each ROM version, the I/O configuration is stored into a separate
internal EEPROM block during programming. The configuration is downloaded to the I/Os with
every power-on reset.
14. Introduction
The microcontroller block is a member of Atmel’s family of 4-bit single-chip microcontrollers.
Instead of ROM it contains EEPROM, RAM, parallel I/O ports, two 8-bit programmable multi-
function timer/counters, voltage supervisor, interval timer with watchdog function and a
sophisticated on-chip clock generation with integrated RC-, 32-kHz and 4-MHz crystal
oscillators.
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4590G–4BMCU–06/07