HD64F3437TFI16V Renesas Electronics America, HD64F3437TFI16V Datasheet - Page 178

• 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

7.11
7.11.1
Port A is an 8-bit input/output port that is multiplexed with key-sense input pins. The port A pin
functions are the same in all operating modes. Figure 7.18 shows the pin configuration of port A.
Port A has built-in, programming MOS input pull-up transistors.
Pins in port A can drive one TTL load and a 90-pF capacitive load. They can also drive a
darlington transistor. Pins PA
section 13, I
7.11.2
Table 7.20 summarizes the port A registers.
Table 7.20 Port A Registers
Name
Port A data direction register
Port A output data register
Port A input data register
Note: The data direction register (PADDR) and input data register (PAPIN) have the same
146
address.
Port A
Overview
Register Configuration and Descriptions
2
C Bus Interface.
Port A
Figure 7.18 Port A Pin Configuration
4
, PA
Abbreviation
PADDR
PAODR
PAPIN
5
, PA
6
, and PA
Port A pins
PA
PA
PA
PA
PA
PA
PA
PA
7
6
5
4
3
2
1
0
(input/output)/KEYIN
(input/output)/KEYIN
(input/output)/KEYIN
(input/output)/KEYIN
(input/output)/KEYIN
(input/output)/KEYIN
(input/output)/KEYIN
(input/output)/KEYIN
7
can be driven as bus buffers, as shown in
Read/Write
W
R/W
R
Initial Value
H'00
H'00
Undetermined
15
14
13
12
11
10
9
8
(input)
(input)
(input)
(input)
(input)
(input)
(input)
(input)
Address
H'FFAB
H'FFAA
H'FFAB