HT46R23 Datasheet, PDF (1/42 Pages) Holtek Semiconductor Inc – 8-Bit OTP Microcontroller

HT46R23
8-Bit OTP Microcontroller
Features
· Operating voltage:
f_SYS=4MHz: 3.3V~5.5V
f_SYS=8MHz: 4.5V~5.5V
· 23 bidirectional I/O lines (max.)
· 1 interrupt input shared with an I/O line
· 16-bit programmable timer/event counter with overflow
interrupt and 7-stage prescaler
· 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
consumption
· Up to 0.5ms instruction cycle with 8MHz system clock
at V_DD=5V
· 8-level subroutine nesting
· 8 channels 10-bit resolution (9-bit accuracy) A/D con-
verter
· 2-channel (6+2)/(7+1)-bit PWM output shared with
two I/O lines
· 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
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.
The program and option memories can be electrically
programmed, making this microcontroller suitable for
product development applications.
I²C is a trademark of Philips Semiconductors.
Rev. 1.30
1
August 17, 2001