HT46C22

HT46R22/HT46C22 8-Bit A/D Type MCU Features · Operating voltage: · Up to 0.5ms instruction cycle with 8MHz system clock fSYS=4MHz: 2.2V~5.5V fSYS=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 2 Rev. 1.10 1 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 M U P r e s c a le r X P A 4 /T M R fS ...