Holtek HT46R46 Manual

Features
·
Operating voltage:
f =4MHz: 2.2V~5.5V
SYS
f =8MHz: 3.3V~5.5V
SYS
·
13 to 23 bidirectional I/O lines
·
External 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 function
·
PFD for audio frequency generation
·
Power down and wake-up functions to reduce power
consumption
General Description
The Cost-Effective A/D Type MCU Devices are a series
of 8-bit high performance RISC architecture
microcontrollers, designed especially for applications
that interface directly to analog signals, such as those
from sensors. All devices include an integrated
multi-channel Analog to Digital Converter in addition to
one or two Pulse Width Modulation outputs. The usual
Holtek MCU features such as power down and wake-up
functions, oscillator options, programmable frequency
divider, etc. combine to ensure user applications require
a minimum of external components.
Rev. 1.41
HT46R46/C46/R47/C47/R48A/C48A/R49
Cost-Effective A/D Type 8-Bit MCU
·
Up to 0.5ms instruction cycle with 8MHz system clock
at V =5V
DD
·
4 or 6-level subroutine nesting
·
4 channels 8 or 9-bit resolution A/D converter
·
1 or 2 channel 8-bit PWM output shared with I/O lines
·
Bit manipulation instruction
·
Table read instructions
·
63 powerful instructions
·
All instructions executed in one or two machine
cycles
·
Low voltage reset function
·
Range of packaging types
The benefits of integrated A/D and PWM functions, in
addition to low power consumption, high performance,
I/O flexibility and low-cost, provide these devices with
the versatility to suit a wide range of application possibil-
ities such as sensor signal processing, motor driving, in-
dustrial control, consumer products, subsystem
controllers, etc. Many features are common to all de-
vices, however, they differ in areas such as I/O pin
count, Program Memory capacity, A/D resolution, stack
capacity and package types.
1 December 30, 2008