32182 Datasheet, PDF (210/755 Pages) Renesas Technology Corp – 32-BIT RISC SINGLE-CHIP MICROCOMPUTER M32R FAMILY / M32R/ECU SERIES

8
INPUT/OUTPUT PORTS AND PIN FUNCTIONS
8.5 Port Peripheral Circuits
P41(BLW#/BLE#)
P42(BHW#/BHE#)
P43(RD#)
P61-P63
Data bus
P84(SCLKI0/SCLKO0)
P87(SCLKI1/SCLKO1)
Data bus
Direction register
Port output latch
Input data select bit
Direction register
Port output latch
Input data select bit
Input function
enable
(Note 1)
Port level switching
function (No
peripheral input)
SCLKOi output
SCLKIi input
Operation mode register
UART/CSIO function
select bit
Internal/external clock
select bit
Input function
enable
(Note 1)
Port level switching
function (Standard:
peripheral Schmitt)
Note 1: For details about the port level switching function, see Section 8.4, "Port Input Level Switching Function."
Notes: • During processor and external extension modes, P41-P43 are external bus interface control signal pins, but their
functional description in this block diagram is omitted.
• The circle denotes a pin.
• The symbol
denotes a parasitic diode. Make sure the voltage applied to each pin does not exceed the VCCE voltage.
• The input capacitance of each pin is approximately 10 pF.
Figure 8.5.3 Port Peripheral Circuit Diagram (3)
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32182 Group User’s Manual (Rev.1.0)