HT46R064D/065D/066D
Enhanced A/D Type 8-Bit OTP MCU with LED Driver
Analog to Digital Converter
The need to interface to real world analog signals is a common requirement for many electronic
systems. However, to properly process these signals by a microcontroller, they must first be converted
into digital signals by A/D converters. By integrating the A/D conversion electronic circuitry into the
microcontroller, the need for external components is reduced significantly with the corresponding
follow-on benefits of lower costs and reduced component space requirements.
A/D Overview
The device contains an 4/8-channel analog to digital converter which can directly interface to external
analog signals, such as that from sensors or other control signals and convert these signals directly into
a 12-bit digital value.
Part No.
Input Channels Conversion Bits
Input Pins
HT46R064D
HT46R065D
4
8
12
12
PA0~PA2, PA5
PA0~PA2, PA5,
PB0~PB3
HT46R066D
The accompanying block diagram shows the overall internal structure of the A/D converter, together
with its associated registers.
A/D Converter Structure
Rev. 1.00
57
January 12, 2011
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
