General Description

The HT46R65/HT46C65 are 8-bit, high performance, RISC architecture microcontroller devices specifically designed for A/D product applications that interface directly to analog signals and which require LCD Interface. The mask version HT46C65 is fully pin and functionally compatible with the OTP version HT46R65 device.

Features

? Operating voltage:

fSYS=4MHz: 2.2V~5.5V

fSYS=8MHz: 3.3V~5.5V

? 24 bidirectional I/O lines

? Two external interrupt input

? Two 16-bit programmable timer/event counter with PFD (programmable frequency divider) function

? LCD driver with 41x3 or 40x4 segments (logical output option for SEG0~SEG23)

? 8Kx16 program memory

? 384x8 data memory RAM

? Supports PFD for sound generation

? Real Time Clock (RTC)

? 8-bit prescaler for RTC

? Watchdog Timer

? Buzzer output

? On-chip crystal, RC and 32768Hz crystal oscillator

? HALT function and wake-up feature reduce power consumption

? 16-level subroutine nesting

? 8 channels 10-bit resolution A/D converter

? 4-channel 8-bit PWM output shared with 4 I/O lines

? Bit manipulation instruction

? 16-bit table read instruction

? Up to 0.5μs instruction cycle with 8MHz system clock

? 63 powerful instructions

? All instructions in 1 or 2 machine cycles

? Low voltage reset/detector function

? 52-pin QFP, 56-pin SSOP, 100-pin QFP packages