General Description; Block Diagram; Pin Assignment - Holtek HT46R003B Manual

General Description

The device is 8-bit high performance RISC architecture microcontroller device specifically designed
for a wide range of applications. The advantages of low power consumption, I/O flexibility, timer
functions, oscillator options, HALT and wake-up functions, watchdog timer, as well as low cost,
enhance the versatility of the device to suit for a wide range of the I/O and A/D control application
possibilities such as industrial control, consumer products and subsystem controllers, etc.

Block Diagram

PWM
Driver
I/O
Ports

Pin Assignment

Rev. 1.00
Cost-Effective A/D 8-bit OTP MCU
OTP RAM
PFD
Program Data
Driver
Memory Memory
A/D
Time 8-bit
Converter
Base Timer
PA3/AN3
1
PA2/AN2
2
PA1/AN1
3
PA0/AN0
4
VSS
5
PB0
6
PB1
7
PB2 8
HT46R003B
16 NSOP-A/DIP-A
6
HT46R003B
Low Voltage
Watchdog
8-bit
RISC
MCU
Core
Controller
Internal RC
Oscillators
PA4/PWM
16
PA5/AN4
15
PA6/INT
14
PA7/RES
13
VDD
12
PB5/PFD
11
PB4/TMR
10
9 PB3
Reset
Timer
Reset
Circuit
Interrupt
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