HD64F3437TFI16V Renesas Electronics America, HD64F3437TFI16V Datasheet - Page 186

• 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

Pin Functions in Mode 3: In mode 3 (single-chip mode), each pin can be designated for general
input or output. A pin becomes an output pin when its PBDDR bit is set to 1, and an input pin
when this bit is cleared to 0. Figure 7.21 shows the pin functions in mode 3.
7.12.4
Port B has built-in programmable input pull-up transistors that are available in mode 3. The pull-
up for each bit can be turned on and off individually.
An input pull-up transistor is turned on in mode 3 if 1 is written in the corresponding PBODR bit
while the corresponding PBDDR bit is cleared to 0.
The input pull-ups are turned off by a reset and in hardware standby mode. In software standby
mode, the previous state is maintained.
Table 7.24 indicates the states of the input pull-up transistors in each operating mode.
Table 7.24 States of Input Pull-Up Transistors (Port B)
Mode
1
2
3
Notes: Off:
154
On/off: The input pull-up transistor is on if PBDR = 1 and PBDDR = 0, but off otherwise.
Input Pull-Up Transistors
Reset
Off
Off
Off
The input pull-up transistor is always off.
Hardware Standby
Off
Off
Off
Figure 7.21 Pin Functions in Mode 3 (Port B)
Port B
Software Standby
On/off
On/off
On/off
Mode 3
PB
PB
PB
PB
PB
PB
PB
PB
7
6
5
4
3
2
1
0
(input/output)
(input/output)
(input/output)
(input/output)
(input/output)
(input/output)
(input/output)
(input/output)
Other Operating Modes
On/off
On/off
On/off