em78p164n ELAN Microelectronics Corp, em78p164n Datasheet - Page 9

• Manufacturer Part Number: em78p164n
• Description: 8-bit Microcontroller With Otp Rom
• Manufacturer: ELAN Microelectronics Corp

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Product Specification (V1.4) 05.28.2010
(This specification is subject to change without further notice)
Pin Description
4.1 EM78P164N − 16 pin
P50~P55
P60~P67
INT
PWM
/RST
CINA-
CINB-
CINC-
CIND-
CIN1+
CO
TCC
OSCI
OSCO
VDD
VSS
Symbol
Pin No. Type
13~16
6~11
1, 2,
3, 4,
11
10
10
11
12
8
9
4
3
2
9
6
7
5
I/O
I/O
O
O
O
–
–
I
I
I
I
I
I
I
I
I
RC type: RC oscillator input pin
External clock signal input.
6-bit general purpose input/output pins.
Default value at power-on reset.
P50~P53 can be pulled-down by software control.
P51~P54 are always open drain and can be connected to an
external high voltage of ≈12V.
8-bit general purpose input/output pins.
Default value at power-on reset.
Can be pulled-high by software control.
P60~P62 can be pulled-down by software control.
P63 is open drain for output port.
External interrupt pin triggered by a falling edge.
Pulse width modulation output.
General-purpose Input only.
If it remains at logic low, the device will be reset.
Wake-up from sleep mode when pin status changes.
Voltage on /RESET must not exceed Vdd during normal mode.
“-“ : the input pin of Vin- of the comparator.
Select by CMPCON II (RC)
“+” : the input pin of Vin+ of the comparator.
Can use External/Internal Voltage input.
Pin CO is the comparator output.
Set by CMPCON I (RB).
Real time clock/counter with Schmitt Trigger input pin. It must
be tied to VDD or VSS if not in use.
Crystal type: Crystal input terminal or external clock input pin
Crystal type: Output terminal for crystal oscillator or external
RC type: Clock output with a duration of one instruction cycle
The prescaler is determined by the CONT register.
Power supply
Ground
clock input pin.
time.
8-Bit Microcontroller with OTP ROM
Function
EM78P164N
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