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EM78P809N
8-Bit Microcontroller
Symbol Pin No.
P80~P81
12~13
P90~P97
4~11
VSS
14
NC
3
VPP
27
ACLK
1
DATAIN
25
DINCK
26
PGMB
24
OEB
23
4 •
Type
* P80~P83 are bi-directional I/O pins
* P80 can be used as 8-bit Timer/Counter 3 (TC3) or external Interrupt
Input 3 (INT3)
I/O
* P81 can be used as 8-bit Timer/Counter 4 (TC4) or programmable
divider output (PDO)
* P80 ~ P81 can be used as pull high or pull low pins
* P90~P97 are bi-directional I/O pins
I/O
* P90~P97 can be used as 8 channel 10-bit resolution A/D converter
* P97 can be used as AD reference power supply input (VREF)
-
* Ground
-
* No connection
OTP Programming Pins
I
Programming voltage input
I
CLK for OTP memory address increment
I/O
ROM code series input and series output pin
I
ROM code input clock
I
Program write enable pin. Active low.
I
Output enable pin. Active low.
Function
Product Specification (V1.0) 07.26.2005
(This specification is subject to change without further notice)
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