32182 Datasheet, PDF (208/755 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
8.5 Port Peripheral Circuits
Figures 8.5.1 through 8.5.4 show the peripheral circuit diagrams of the input/output ports described in the preced-
ing pages.
P00–P07(DB0–DB7)
P10–P17(DB8–DB15)
P20–P27(A23–A30)
P30–P37(A15–A22)
P46, P47(A13, A14)
P71(WAIT#)
P73(HACK#)
P74(RTDTXD)
P76(RTDACK)
P224(A11/CS2#)
P225(A12/CS3#)
Data bus
Direction register
Port output latch
Input data select bit
Peripheral function input
P44(CS0#)
P45(CS1#)
P70(BCLK/WR#)
P82(TXD0)
P85(TXD1)
P93–P97(TO16–TO20)
P100(TO8)
P103–P107(TO11–TO15)
P110–P117(TO0–TO7)
P174(TXD2)
P220(CTX0)
Data bus
Operation mode register
Input function
enable
(Note 1)
Port level
switching function
(Standard:
peripheral TTL)
Direction register
Port output latch
Input data select bit
Peripheral function output
Operation mode register
Input function
enable
(Note 1)
Port level switching
function (No
peripheral input)
Note 1: For details about the port level switching function, see Section 8.4, "Port Input Level Switching Function."
Notes: • During processor mode, P00-P07, P10-P17, P20-P27, P30-P37, P45-P47, P224, and P225 are external bus
interface control signal pins, but their functional description in this block diagram is omitted.
• Although P224 and P225 serve triple functions, 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 8.5.1 Port Peripheral Circuit Diagram (1)
8-27
32182 Group User’s Manual (Rev.1.0)