HD64F3437TFI16V Renesas Electronics America, HD64F3437TFI16V Datasheet - Page 133

• Manufacturer Part Number: HD64F3437TFI16V
• Description: MCU FLASH 60K 100-TQFP
• Manufacturer: Renesas Electronics America

Specifications of HD64F3437TFI16V

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Section 7 I/O Ports
7.1
Overview
The H8/3437 Series has eight 8-bit input/output ports, one 7-bit input/output port, and one 3-bit
input/output port, and are 8-bit input port.
Table 7.1 lists the functions of each port in each operating mode. As table 7.1 indicates, the port
pins are multiplexed, and the pin functions differ depending on the operating mode.
Each port has a data direction register (DDR) that selects input or output, and a data register (DR)
that stores output data. If bit manipulation instructions will be executed on the port data direction
registers, see “Notes on Bit Manipulation Instructions” in section 2.5.5, Bit Manipulations.
Ports 1, 2, 3, 4, 6, 9, A, and B can drive one TTL load and a 90-pF capacitive load. Ports 5 and 8
can drive one TTL load and a 30-pF capacitive load. Ports 1 and 2 can drive LEDs (with 10-mA
current sink). Ports 1 to 6, 8, 9, A, and B can drive a darlington transistor. Ports 1 to 3, 6, A, and B
have built-in MOS pull-up transistors.
For block diagrams of the ports, see appendix C, I/O Port Block Diagrams.
Pins P8
in port 8, P9
in port 9, and PA
, PA
, PA
, and PA
in port A can be driven to operate as
6
7
4
5
6
7
2
bus buffers. For details, see section 13, I
C Bus Interface.
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