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EM78P458AP Datasheet(PDF) 6 Page - ELAN Microelectronics Corp

Part # EM78P458AP
Description  8-BIT MICRO-CONTROLLER
PDF  76 Pages
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Manufacturer  EMC [ELAN Microelectronics Corp]
Direct Link  http://www.emc.com.tw
Logo EMC - ELAN Microelectronics Corp

EM78P458AP Datasheet(HTML) 6 Page - ELAN Microelectronics Corp

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EM78P458/459
OTP ROM
3. PIN ASSIGNMENT
P56/CIN+
P57/CO
P60/ADC1
P61/ADC2
Vss
P62/ADC3
P63/ADC4
P64/ADC5
P65/ADC6
P66/ADC7
P55/CIN-
P54/TCC
OSCI
OSCO
VDD
P53/VREF
P52/PWM2
P51/PWM1
P50/INT
P67/ADC8
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
P56/CIN+
P57/CO
P60/ADC1
P61/ADC2
Vss
P62/ADC3
P63/ADC4
P64/ADC5
P65/ADC6
P66/ADC7
ENTCC
Vss
P55/CIN-
P54/TCC
OSCI
OSCO
VDD
P53/VREF
P52/PWM2
P51/PWM1
P50/INT
P67/ADC8
RESET
VDD
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
Fig. 1 Pin Assignment
Table 1 EM78P458 Pin Description
Symbol
Pin No.
Type
Function
VDD
16
-
Power supply.
OSCI
18
I
* XTAL type: Crystal input terminal or external clock input pin.
* RC type: RC oscillator input pin.
OSCO
17
O
*XTAL type: Output terminal for crystal oscillator or external clock input
pin.
*RC type: Clock output with a period of one instruction cycle time, the
prescaler is determined by the CONT register.
* External clock signal input.
P50
12
I
* General-purpose Input only.
* Default value while power-on reset.
P51 ~ P57
13~15
19, 20,
1, 2
I/O
* General-purpose I/O pin.
* Default value while power-on reset.
P60 ~ P67
3, 4,
6~11
I/O
* General-purpose I/O pin.
* Default value while power-on reset.
INT
12
I
* External interrupt pin triggered by falling edge.
ADC1~ADC8
3, 4,
6 ~ 11
I
* Analog to Digital Converter.
* Defined by AD-CMPCON (IOCA0)<2:4>.
PWM1,
PWM2
13, 14
O
* Pulse width modulation outputs.
* Defined by PWMCON (IOC51)<6, 7>
VREF
15
I
* External reference voltage for ADC
* Defined by AD-CMPCON (IOCA0)<7>.
This specification is subject to change without prior notice.
06.25.2004 (V1.4)
6



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