EM78P156EL Ver la hoja de datos (PDF) - Elan Microelectronics Corp
Número de pieza
componentes Descripción
Fabricante
EM78P156EL Datasheet PDF : 55 Pages
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EM78P156EL
OTP ROM
3. PIN ASSIGNMENTS
P52 1
P53 2
TCC 3
/RESET 4
Vss 5
P60/INT 6
P61 7
P62 8
P63 9
18 P51
17 P50
16 OSCI
15 OSCO
14 VDD
13 P67
12 P66
11 P65
10 P64
NC 1
P52 2
P53 3
TCC 4
/RESET 5
Vss 6
P60/INT 7
P61 8
P62 9
P63 10
20 NC
19 P51
18 P50
17 OSCI
16 OSCO
15 VDD
14 P67
13 P66
12 P65
11 P64
P52 1
P53 2
TCC 3
/RESET 4
Vss 5
Vss 6
P60/INT 7
P61 8
P62 9
P63 10
20 P51
19 P50
18 OSCI
17 OSCO
16 VDD
15 VDD
14 P67
13 P66
12 P65
11 P64
Fig. 1 Pin Assignment
Table 1 EM78P156ELP and EM78P156ELM Pin Description
Symbol Pin No.
VDD
14
OSCI
16
OSCO
15
TCC
3
/RESET 4
P50~P53
17, 18,
1, 2
P60~P67 6~13
/INT
6
VSS
5
Type
-
I
I/O
I
I
I/O
I/O
I
-
Function
* Power supply.
* XTAL type: Crystal input terminal or external clock input pin.
* ERC type: RC oscillator input pin.
* XTAL type: Output terminal for crystal oscillator or external clock input pin.
* RC type: Instruction clock output.
* External clock signal input.
* The real time clock/counter (with Schmitt trigger input pin), must be tied to
VDD or VSS if not in use.
* Input pin with Schmitt trigger. If this pin remains at logic low, the controller
will also remain in reset condition.
* P50~P53 are bi-directional I/O pins.
* P50 and P51 can also be defined as the R-option pins.
* P50~P52 can be pulled-down by software.
* P60~P67 are bi-directional I/O pins.
* These can be pulled-high or can be open-drain by software programming.
* P60~P63 can also be pulled-down by software.
* External interrupt pin triggered by falling edge.
* Ground.
This specification is subject to change without prior notice.
6
07.29.2004 (V1.3)
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