HT46R22 Datasheet, PDF (1/46 Pages) Holtek Semiconductor Inc – 8-Bit A/D Type MCU

HT46R22/HT46C22
8-Bit A/D Type MCU
Features
· Operating voltage:
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-
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
consumption
· Up to 0.5ms instruction cycle with 8MHz system clock
at V_DD=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
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
General Description
The device is an 8-bit high performance RISC-like
microcontroller designed for multiple I/O product appli-
cations. It is particularly suitable for use in products
such as washing machine controllers and home appli-
ances. A HALT feature is included to reduce power con-
sumption.
I²C is a trademark of Philips Semiconductors
Rev. 1.10
1
October 2, 2002