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