HT46R47 Datasheet, PDF (1/45 Pages) Holtek Semiconductor Inc – 8-Bit OTP Battery Charger Controller

HT46R47
8-Bit OTP Battery Charger Controller
Features
· Operating voltage:
f_SYS=4MHz: 3.3V~5.5V
f_SYS=8MHz: 4.5V~5.5V
· 13 bidirectional I/O lines (max.)
· 1 interrupt input shared with an I/O line
· 8-bit programmable timer/event counter with
overflow interrupt and 7-stage prescaler
· On-chip crystal and RC oscillator
· Watchdog Timer
· 2048´14 program memory PROM
· 64´8 data memory RAM
· Supports PFD for sound generation
· HALT function and wake-up feature reduce
power consumption
General Description
The device is an 8-bit high performance
RISC-like microcontroller designed for multi-
ple I/O product applications. The device is par-
ticularly suitable for use in products such as
battery charger controllers and A/D applica-
tions. A HALT feature is included to reduce
power consumption.
· Up to 0.5ms instruction cycle with 8MHz
system clock at V_DD=5V
· Six-level subroutine nesting
· 4 channels 9-bit resolution (8-bit accuracy)
A/D converter
· 1 channel (6+2)-bit PWM output shared
with an I/O line
· Bit manipulation instruction
· 14-bit table read instruction
· 63 powerful instructions
· All instructions in one or two machine
cycles
· Low voltage reset function
· 18-pin DIP/SOP package
The program and option memories can be elec-
trically programmed, making the microcontrol-
ler suitable for use in product development.
Rev. 1.40
1
July 18, 2001