HT46R23 Datasheet | Holtek Semiconductor

Features - Operating voltage: - Up to 0.5ms instruction cycle with 8MHz system clock f SYS=4MHz: 3.3V~5.5V f SYS=8MHz: 4.5V~5.5V at VDD=5V - 23 bidirectional I/O lines (max.) - 1 interrupt input shared with an I/O line - 16-bit programmable timer/event counter with overflow - 8-level subroutine nesting - 8 channels 10-bit resolution (9-bit accuracy) A/D con- verter interrupt and 7-stage prescaler - 2-channel (6+2)/(7+1)-bit PWM output shared with two I/O lines - On-chip crystal and RC oscillator - Watchdog Timer - 4096´15 program memory PROM - 192´8 data memory RAM - Supports PFD for sound generation - HALT function and wake-up feature reduce power - Bit manipulation instruction - 15-bit table read instruction - 63 powerful instructions - All instructions in one or two machine cycles - Low voltage reset function - I2C BUS (slave mode) - 24/28-pin SKDIP/SOP package consumption General Description The device is an 8-bit high performance RISC-like microcontroller designed for multiple I/O product applications. It is particularly suitable for use in products such as washing machine controllers and home appliances. A HALT feature is included to reduce power consumption. The program and option memories can be electrically programmed, making this microcontroller suitable for product development applications. I C is a trademark of Philips Semiconductors. Rev. 1.30 August 17, 2001 Block Diagram P A 5 /IN T In te rru p t C ir c u it S T A C K P ro g ra m R O M P ro g ra m C o u n te r IN T C T M R T M R C P A 3 /P F D P r e s c a le r X P A 4 /T M R f S P A 4 S Y S C L K /4 In s tr u c tio n R e g is te r D A T A M e m o ry P...