em78p809n ELAN Microelectronics Corp, em78p809n Datasheet - Page 7

• Manufacturer Part Number: em78p809n
• Description: 8-bit Microcontroller
• Manufacturer: ELAN Microelectronics Corp

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Product Specification (V1.0) 07.26.2005
(This specification is subject to change without further notice)
Pin Assignment
Pin Description
Table 1
P60~P67
P70~P73
Symbol Pin No.
/RESET
OSCO
OSCI
VDD
(TC4, /PWM, /PDO) P81
19~26
15~18
28
27
2
1
(AD7/VREF) P97
(TC3, INT3) P80
(ACLK)
Type
I/O
I/O
I/O
-
I
I
(AD0) P90
(AD1) P91
(AD2) P92
(AD3) P93
(AD4) P94
(AD5) P95
(AD6) P96
OSCO
TEST
OSCI
* Power supply
* Crystal type: Crystal input terminal
* RC type: RC oscillator input pin
* Crystal type: Output terminal for crystal oscillator
* RC type: Instruction clock output
* External clock signal input
* Input pin with Schmitt trigger. If this pin remains at logic low, the
* P60~P67 are bi-directional I/O pins
* P60 can be used as external interrupt 0 (/INT0)
* P61 can be used as external interrupt 1 (INT1)
* P62 can be used as 16-bit Timer/Counter 2 (TC2)
* P63 can be used as divider output (/TONE)
* P64 slave mode enable (/SS)
* P60 ~ P63 can be used as pull high or pull low pins
* P70~P77 are bi-directional I/O pins
* P70 can be used as SPI serial clock input/output (/SCK)
* P71 can be used as SPI serial data input (SI) or UART data receive
* P72 can be used as SPI serial data output (SO) or UART data
* P73 can be used as SLEEP mode release input (/SLEEP) or external
* P70 ~ P73 can be used as pull high or pull low pins
VSS
controller will also remain in reset condition.
transmit output (TX)
interrupt input 5 (/INT5)
input (RX)
Fig. 1. Pin Assignment
4
5
6
7
8
10
11
12
13
14
1
2
3
9
EM78P809N
28
27
26
25
24
23
22
21
20
19
18
17
16
15
P65
P64
P73 (/SLEEP, /INT5)
P72 (TX,SO)
P70 (/SCK)
P66
P60 (/INT0)
P71(RX,SI)
P67
P61 (INT1)
P63 (/TONE)
P62 (TC2)
VDD
/RESET
Function
(PGMB)
(/SS)(OEB)
(DATAIN)
(DINCK)
(VPP)
8-Bit Microcontroller
EM78P809N
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