UPD78P083GB-3BS-MTX-A Datasheet, PDF (18/58 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCONTROLLER

µPD78P083
2.2 Pins in PROM Programming Mode
Pin Name
RESET
VPP
A0-A14
D0-D7
CE
OE
PGM
VDD
VSS
Input/Output
Input
Input
Input
Input/output
Input
Input
Input
—
—
Function
PROM programming mode setting
When +5 V or +12.5 V is applied to the VPP pin and a low-level signal is applied to the RESET pin,
this chip is set in the PROM programming mode.
PROM programming mode setting and high-voltage applied during program write/verification.
Address bus
Data bus
PROM enable input/program pulse input
Read strobe input to PROM
Program/program inhibit input in PROM programming mode.
Positive power supply
Ground potential
2.3 Pin Input/Output Circuits and Recommended Connection of Unused Pins
Types of input/output circuits of the pins and recommeded connection of unused pins are shown in Table 2-1.
For the configuration of each type of input/output circuit, see Figure 2-1.
Table 2-1. Type of Input/Output Circuit of Each Pin
Pin Name
P00
P01/INTP1
P02/INTP2
P03/INTP3
P10/ANI0-P17/ANI7
P30-P32
P33, P34
P35/PCL
P36/BUZ
P37
P50-P57
P70/SI2/RxD
P71/SO2/TxD
P72/SCK2/ASCK
P100/TI5/TO5
P101/TI6/TO6
RESET
AVREF
AVDD
AVSS
VPP
NC
Input/Output
Circuit Type
2
8-A
Input/Output
Recommended Connection for Unused Pins
Input
Input/Output
Connect to VSS.
Independently connect to VSS via a resistor.
11
Input/Output
Independently connect to VDD or VSS via
5-A
a resistor.
8-A
5-A
5-A
8-A
5-A
8-A
8-A
2
–
Input
–
–
Connect to VSS.
Connect to VDD.
Connect to VSS.
Connect directly to VSS.
Connect to VSS (can leave open)
16