HD64F2168 Datasheet, PDF (217/874 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

Section 8 I/O Ports
Table 8.1 is a summary of the port functions. The pins of each port also function as input/output
pins of peripheral modules and interrupt input pins. Each input/output port includes a data
direction register (DDR) that controls input/output and a data register (DR) that stores output data.
DDR and DR are not provided for an input-only port.
Ports 1 to 3, 6, A, and D0 to D5 have built-in input pull-up MOSs. For port A and D0 to D5, the
on/off status of the input pull-up MOS is controlled by DDR and ODR. Ports 1 to 3 and 6 have an
input pull-up MOS control register (PCR), in addition to DDR and DR, to control the on/off status
of the input pull-up MOSs.
Ports 1 to 6, and 8 to F can drive a single TTL load and 30 pF capacitive load. All the I/O ports
can drive a Darlington transistor in output mode. Ports 8, C0 to C5 and D6 to D7 are NMOS push-
pull output.
Table 8.1 Port Functions
Port
Port 1
Port 2
Description
Extended Mode
(EXPE = 1)
General I/O port also P17/A7/AD7
functioning as PWM
output, address
output, and
P16/A6/AD6
P15/A5/AD5
address/data
P14/A4/AD4
multiplex input/output _P13/A3/AD3
P12/A2/AD2
P11/A1/AD1
P10/A0/AD0
General I/O port also P27/A15/AD15
functioning as PWM
output, address
output, and
P26/A14/AD14
P25/A13/AD13
address/data
P24/A12/AD12
multiplex input/output _P23/A11/AD11
P22/A10/AD10
P21/A9/AD9
P20/A8/AD8
Single-Chip Mode
(EXPE = 0)
P17/PW7
P16/PW6
P15/PW5
P14/PW4
P13/PW3
P12/PW2
P11/PW1
P10/PW0
P27/PW15
P26/PW14
P25/PW13
P24/PW12
P23/PW11
P22/PW10
P21/PW9
P20/PW8
I/O Status
Built-in input
pull-up MOSs
LED drive
capability
(sink current 5
mA)
Built-in input
pull-up MOSs
LED drive
capability
(sink current 5
mA)
Rev. 3.00, 03/04, page 177 of 830