46R22 Datasheet | Holtek Semiconductor

Features - Operating voltage: - Up to 0.5ms instruction cycle with 8MHz system clock f SYS=4MHz: 2.2V~5.5V f SYS=8MHz: 4.5V~5.5V - 19 bidirectional I/O lines (max.) - 1 interrupt input shared with an I/O line - 8-bit programmable timer/event counter with over- at VDD=5V - 6-level subroutine nesting - 8 channels 9-bit resolution (8-bit accuracy) A/D con- verter - 1-channel (6+2)/(7+1)-bit PWM output shared with flow interrupt and 7-stage prescaler - On-chip crystal and RC oscillator - Watchdog Timer - 2048´14 program memory ROM - 64´8 data memory RAM - Supports PFD for sound generation - HALT function and wake-up feature reduce power two I/O lines - Bit manipulation instruction - 14-bit table read instruction - 63 powerful instructions - All instructions in one or two machine cycles - Low voltage reset function - I2C BUS (slave mode) - 24-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. I C is a trademark of Philips Semiconductors Rev. 1.10 October 2, 2002 HT46R22/HT46C22 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 . 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...