upd70f3017ay Renesas Electronics Corporation., upd70f3017ay Datasheet - Page 378

• Manufacturer Part Number: upd70f3017ay
• Description: V850/sa1tm 32-/16-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

(1) Functions of P7 and P8 pins
(2) Block diagram (port 7, port 8)
378
Remarks 1. RD: Read signals of ports 7 and 8
Port 7 is an 8-bit input-only port and port 8 is a 4-bit input-only port.
The pin statuses can be read by reading ports 7 and 8 (P7 and P8). Data cannot be written to P7 or P8.
A software pull-up function is not implemented.
Values read from pins specified as analog inputs are undefined values. Do not read values from P7 or P8 during
A/D conversion.
2. m = 7, 8
n = 0 to 7 (when m = 7), 0 to 3 (when m = 8)
x = 0 to 7 (when m = 7), 8 to 11 (when m = 8)
WR
WR
WR
RD
PORT
PM
MM
Figure 14-15. Block Diagram of P70 to P77 and P80 to P83
Output latch
(P9n)
PM9n
Alternate
PM9
MM
function
CHAPTER 14 PORT FUNCTION
User’s Manual U12768EJ4V1UD
I/O controller
P90/LBEN/WRL
P91/UBEN
P92/R/W/WRH
P93/DSTB/RD
P94/ASTB
P95/HLDAK