HT48R53 - Holtek Semiconductor

HT48R53 (HT48R52 / HT48R53) I/O Type 8-Bit MCU

These devices are 8-bit high performance, RISC architecture microcontroller specifically designed for multiple I/O control product applications. The advantages of low power consumption, I/O flexibility, timer functions, oscillator options, HALT and wake-up functions, watchdog timer, buzzer driver, as well as low cost, enhance the versatility of these devices.

Features

· Operating voltage:
· External RC and 32768Hz crystal oscillator
· Dual clock system offers three operating modes - Normal mode: Both RC and 32768Hz clock active - Slow mode: 32768Hz clock only - Idle mode: Periodical wake-up by watchdog timer fSYS=4MHz: 2.2V~5.5V fSYS=8MHz: 3.3V~5.5V
· Program memory: HT48R52: 2k´14 HT48R53: 4k´15
· 88´8 data memory
· 40 bidirectional I/O lines
· One External interrupt input
· One Internal interrupt
· 8 bit programmable timer/event counter
· 4-level subroutine nesting
· Watchdog Timer (WDT)
· Buzzer output
· Low voltage reset (LVR) overflow
· HALT functio.