EM78P153E
OTP ROM
3. PIN ASSIGNMENTS
14
13
P50
P67
1
2
3
4
5
P51
P52
P53
Vss
12
11
P66
Vdd
10
P65/OSCI
P64/OSCO
P63//RST
P60//INT
P61
6
9
8
P62/TCC
7
Fig. 1 Pin Assignment
Table 1 Pin Description
Symbol Pin No. Type
Function
Vdd
4
-
Power supply.
* General purpose I/O pin.
* External clock signal input.
* Input pin of XT oscillator.
* Pull_high/open-drain
P65/OSCI
5
I/O
* Wake up from sleep mode when the status of the pin changes.
* General purpose I/O pin.
* External clock signal input.
P64/OSCO
6
I/O
* Input pin of XT oscillator.
* Pull_high/open-drain
* Wake up from sleep mode when the status of the pin changes.
* If set as /RESET and remain at logic low, the device will be under reset.
* If P63 is set and kept at logic “high,” the oscillator will oscillate.
* If kept at logic low, it cannot oscillate.
* Wake up from sleep mode when the status of the pin changes.
* Voltage on /RESET must not exceed Vdd during the normal mode.
* Pull_high is on if defined as /RESET.
* P63 is input pin only
* General purpose I/O pin.
* Pull_high/open_drain/pull_down.
* Wake up from sleep mode when the status of the pin changes.
* External Timer/Counter input.
P63/RESET
P62/TCC
7
8
I
I/O
* General purpose I/O pin.
* Pull_high/open_drain/pull_down.
P61
9
I/O
I/O
* Wake up from sleep mode when the status of the pin changes.
* Schmitt Trigger input during programming mode
* General purpose I/O pin.
P60//INT
10
* Pull_high/open_drain/pull_down.
This specification is subject to change without prior notice.
4
2002/03/01
ELAN [ ELAN MICROELECTRONICS CORP ]
