R5F61525 RENESAS [Renesas Technology Corp], R5F61525 Datasheet - Page 243

• Manufacturer Part Number: R5F61525
• Description: 32-Bit CISC Microcomputer H8SX Family H8SX/1500 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Table 8.1 summarizes the port functions. The pins of each port also have other functions such as
input/output pins of on-chip peripheral modules or external interrupt input pins. Each I/O port
includes a data direction register (DDR) that controls input/output, a data register (DR) that stores
output data, a port register (PORT) used to read the pin states, and an input buffer control register
(ICR) that controls input buffer on/off. Ports 4 and 5 do not have a DR or a DDR register.
Ports D, H, J and K have internal input pull-up MOSs and a pull-up MOS control register (PCR)
that controls the on/off state of the input pull-up MOSs.
Port 2 includes an open-drain control register (ODR) that controls on/off of the output buffer
PMOSs.
Ports 1, 2, 3, 6, A, D, H, J, and K can drive a single TTL load and capacitive loads up to 30 pF.
All of the I/O ports can drive Darlington transistors when functioning as output ports.
Schmitt-trigger inputs are enabled when a port is used as the IRQ and TPU inputs.
Table 8.1
Port
Port 1
Description
General I/O port
also functioning
as interrupt inputs,
SCI I/Os, and A/D
converter inputs
Port Functions
Bit
7
6
5
4
3
2
1
0
I/O
P17
P16/SCK3
P15
P14
P13
P12
P11
P10
Section 8 I/O Ports
Input
ADTRG1/
IRQ7
IRQ6
RxD3/
IRQ5
IRQ4
ADTRG0/
IRQ3
IRQ2
IRQ1
IRQ0
Function
Output



TxD3




Rev. 3.00 Mar. 14, 2006 Page 205 of 804
Schmitt-
Trigger
Input*
IRQ7
IRQ6
IRQ5
IRQ4
IRQ3
IRQ2
IRQ1
IRQ0
1
Input
Pull-up
MOS
Function

Section 8 I/O Ports
REJ09B0104-0300
Open-
Drain
Output
Function
