UPD78P4916 Datasheet, PDF (16/56 Pages) NEC – 16-BIT SINGLE-CHIP MICROCONTROLLER

µPD78P4916
* 2.3 Pin I/O Circuits and Recommended Connection of Unused Pins
Table 2-1 shows the input/output circuit types of the device’s pins and the recommended connection
of the pins which are unnecessary to the user’s application. The circuit diagrams for the I/O circuits are
shown in Figure 2-1.
Table 2-1. Pin I/O Circuits and Recommended Connection of Unused Pins (1/2)
Pins
P00-P07
P40-P47
P50-P57
P60/STRB/CLO
P61/SCK1/BUZ
P62/SO1
P63/SI1
P64
P65/HWIN
P66/PWM4
P67/PWM5
P70/ANI0-P77/ANI7
P80
P82/HASW
P83/ROTC
P84/PWM2
P85/PWM3
P86/PTO10
P87/PTO11
P90/ENV
P91/KEY0-P95/KEY4
P96
SI2/BUSY
SO2
I/O circuit types Direction
5-A
I/O
8-A
5-A
8-A
5-A
8-A
5-A
9
Input
5-A
I/O
8-A
5-A
2-A
Input
4
Output
SCK2
8-A
I/O
ANI8-ANI11
7
RECCTL+, RECCTL–
—
Input
I/O
Recommended connection of unused pins
Input mode: Connect to VDD.
Output mode: Leave unconnected.
Connect to VSS.
Input mode: Connect to VDD.
Output mode: Leave unconnected.
Connect to VDD.
High-impedance mode: Connect to VSS via a pull-down resistor.
Otherwise: Leave unconnected.
Input mode: Connect to VDD.
Output mode: Leave unconnected.
Connect to VSS.
When ENCTL = 0 and ENREC = 0: Connect to VSS.
Remark ENCTL: Bit 1 of the amplifier control register (AMPC)
ENREC: Bit 7 of the amplifier mode register 0 (AMPM0)
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