UPD784915B Datasheet, PDF (15/86 Pages) NEC – 16-BIT SINGLE-CHIP MICROCONTROLLERS

µPD784915B, 784916B
2.3 I/O Circuits and Connection of Unused Pins
Table 2-1 shows the I/O circuit type of each pin and the recommended connection of unused pins. For the
configuration of each type of I/O circuit, refer to Figure 2-1.
Table 2-1. I/O Circuit Type of each Pin and Recommended Connection of Unused Pins (1/2)
Pin
P00 to P07
P40 to P47
P50 to P57
P60/STRB/CLO
P61/SCK1/BUZ
P62/SO1
P63/SI1
P64
P65/HWIN
P66/PWM4
P67/PWM5
P70/ANI0 to P77/ANI7
P80
P82/HASW
P83/ROTC
P84/PWM2
P85/PWM3
P86/PTO10
P87/PTO11
P90/ENV
P91/KEY0 to P95/KEY4
P96
SI2/BUSY
SO2
SCK2
ANI8 to ANI11
RECCTL+, RECCTL–
I/O Circuit Type
5-A
I/O
Recommended Connection of Unused Pins
I/O
Input: Connect to VDD
Output: Leave open
8-A
5-A
8-A
5-A
8-A
5-A
9
Input
Connect to VSS
5-A
I/O
Input: Connect to VDD
Output: Leave open
8-A
5-A
2-A
Input Connect to VDD
4
Output Hi-Z: Connect to VSS via a pull-down resistor
Others: Leave open
8-A
I/O
Input: Connect to VDD
Output: Leave open
7
Input
Connect to VSS
—
I/O
When ENCTL = 0 and ENREC = 0: Connect to VSS
Remark ENCTL : bit 1 of amplifier control register (AMPC)
ENREC: bit 7 of amplifier mode register 0 (AMPM0)
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