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(1) Function of each port
The port functions of this product are shown below.
8-bit and 1-bit operations are possible on all ports, allowing various kinds of control to be performed. In
addition to their port functions, these pins also function as internal peripheral I/O input/output pins in the
control mode. For the block types of each port, see (3) Block diagram of port.
Port Name
Pin Name
Port 0
P00 to P07
Port 1
P10 to P13
Port 2
P20 to P27
Port 3
P30 to P37
Port 4
P40 to P45
Port 5
P50 to P52
Port 7
P70 to P77
Port AL
PAL0 to PAL15
Port AH
PAH0 to PAH9
Port DL
PDL0 to PDL15
Port CS
PCS0 to PCS7
Port CT
PCT0, PCT1,
PCT4 to PCT7
Port CM
PCM0 to PCM5
Port CD
PCD0 to PCD3
Port BD
PBD0 to PBD3
Caution When switching the mode of a port that functions as an output or I/O pin to control mode, be sure
to follow the procedure below.
<1> Set the inactive level of the signals output in control mode to the appropriate bits in port n (n =
0 to 5, AL, AH, DL, CS, CT, CM, CD, and BD).
<2> The mode is switched to control mode by the port n mode control register (PMCn).
If <1> above is not performed, the contents of port n may be output for a moment when the mode is
switched from port mode to control mode.
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CHAPTER 14 PORT FUNCTIONS
Port Function
8-bit I/O
Real-time pulse unit (RPU) I/O
External interrupt input
PWM output
DMA controller input
4-bit I/O
Real-time pulse unit (RPU) I/O
External interrupt input
PWM output
1-bit input,
NMI input
7-bit I/O
Real-time pulse unit (RPU) I/O
External interrupt input
DMA controller output
8-bit I/O
Serial interface I/O (CSI2, UART2)
External interrupt input
A/D converter external trigger input
6-bit I/O
Serial interface I/O (UART0/CSI0, UART1/CSI1)
3-bit I/O
Real-time pulse unit (RPU) I/O
External interrupt input
8-bit input
A/D converter input
16-bit I/O
External address bus (A0 to A15)
10-bit I/O
External address bus (A16 to A25)
16-bit I/O
External data bus (D0 to D15)
8-bit I/O
External bus interface control signal output
6-bit I/O
External bus interface control signal output
6-bit I/O
Wait insertion signal input
Internal system clock output/Bus clock output
External bus interface control signal I/O
Self-refresh request signal input
4-bit I/O
External bus interface control signal output
4-bit I/O
DMA controller output
User's Manual U14359EJ4V0UM
Function in Control Mode
Block Type
A, B, H
A, B
A, B, F, N
B, H, I, L
H, G, M
A, B
C
J
J
O
J, K
J
D, E, J, K
J, K
J
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