HT66F002 Datasheet, PDF (64/144 Pages) Holtek Semiconductor Inc – Cost-Effective A/D Flash MCU with EEPROM

HT66F002/HT66F0025/HT66F003/HT66F004
Cost-Effective A/D Flash MCU with EEPROM
I/O Pin Structures
The accompanying diagrams illustrate the internal structures of some generic I/O pin types. As
the exact logical construction of the I/O pin will differ from these drawings, they are supplied as a
guide only to assist with the functional understanding of the I/O pins. The wide range of pin-shared
structures does not permit all types to be shown.
D a ta B u s
C o n tr o l B it
D
Q
P u ll- H ig h
R e g is te r
S e le c t
V DD
W eak
P u ll- u p
W r ite C o n tr o l R e g is te r
C h ip R e s e t
R e a d C o n tr o l R e g is te r
W r ite D a ta R e g is te r
R e a d D a ta R e g is te r
CK Q
S
D a ta B it
D
Q
CK Q
S
M
U
X
I/O p in
S y s te m W a k e -u p
W a k e - u p S e le c t P A o n ly
Generic Input/Output Structure
D a ta B u s
C o n tr o l B it
D
Q
P u ll- H ig h
R e g is te r
S e le c t
V DD
W eak
P u ll- u p
W r ite C o n tr o l R e g is te r
C h ip R e s e t
C KS Q
R e a d C o n tr o l R e g is te r
W r ite D a ta R e g is te r
R e a d D a ta R e g is te r
T o A /D C o n v e rte r
D a ta B it
D
Q
C KS Q
M
U
X
A n a lo g
In p u t
S e le c to r
A /D In p u t P o rt
S A C S 2~S A C S 0
A/D Input/Output Structure
Rev. 1.71
64
April 11, 2017