EM78156EAS EMC [ELAN Microelectronics Corp], EM78156EAS Datasheet - Page 7

• Manufacturer Part Number: EM78156EAS
• Description: 8-Bit Microcontroller with MASK ROM
• Manufacturer: EMC [ELAN Microelectronics Corp]

Product Specification (V1.3) 07.29.2004
(This specification is subject to change without further notice)
Symbol
Symbol
VDD
OSCI
OSCO
TCC
/RESET
P50~P53
P60~P67
/INT
VSS
VDD
OSCI
OSCO
TCC
/RESET
P50~P53
P60~P67
/INT
VSS
Pin No.
Pin No.
15
17
16
4
5
18, 19,
2, 3
7~14
7
6
15,16
18
17
3
4
19, 20,
1, 2
7~14
7
5, 6
Table 2 EM78156EAS Pin Description
Table 3 EM78156EKM Pin Description
Type
Type
I/O
I/O
I/O
I/O
I/O
I/O
-
I
I
I
I
-
-
I
I
I
I
-
■ 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
■ Input pin with Schmitt trigger. If this pin remains at logic low, the controller
■ P50~P53 are bi-directional I/O pins.
■ P50 and P51 can also be defined as the R-option pins.
■ P50~P52 can also 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 be pulled-down also by software.
■ External interrupt pin triggered by falling edge.
■ Ground.
■ 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
■ Input pin with Schmitt trigger. If this pin remains at logic low, the controller
■ 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.
VDD or VSS if not in use.
will also remain keep in reset condition.
VDD or VSS if not in use.
will also remain in reset condition.
8-Bit Microcontroller with MASK ROM
Function
Function
EM78156E
• 3