
Section 8 I/O Ports
Rev. 6.00 Sep 12, 2006 page 202 of 526
REJ09B0326-0600
Port Data Register B (PDRB)
Bit
7 6 5 4 3 2 1 0
PB
7
PB
6
PB
5
PB
4
PB
3
PB
2
PB
1
PB
0
Read/Write R R R R R R R R
Reading PDRB always gives the pin states. However, if a port B pin is selected as an analog input
channel for the A/D converter by AMR bits CH3 to CH0, that pin reads 0 regardless of the input
voltage.
8.10.3 Pin
Functions
Table 8.27 shows the port B pin functions.
Table 8.27 Port B Pin Functions
Pin
Pin Functions and Selection Method
PB
n
/AN
n
Always as below.
(n = 7 to 0)
Pin
function
PB
n
input pin or AN
n
input pin
8.10.4 Pin
States
Table 8.28 shows the port B pin states in each operating mode.
Table 8.28 Port B Pin States
Pins Reset
Sleep Subsleep
Standby
Watch
Subactive
Active
PB
n
/AN
n
High-
impedance
High-
impedance
High-
impedance
High-
impedance
High-
impedance
High-
impedance
High-
impedance
(n = 7 to 0)
Summary of Contents for F-ZTAT H8/3642A Series
Page 6: ...Rev 6 00 Sep 12 2006 page iv of xx ...
Page 8: ...Rev 6 00 Sep 12 2006 page vi of xx ...
Page 22: ...Rev 6 00 Sep 12 2006 page xx of xx ...
Page 124: ...Section 5 Power Down Modes Rev 6 00 Sep 12 2006 page 102 of 526 REJ09B0326 0600 ...
Page 188: ...Section 6 ROM Rev 6 00 Sep 12 2006 page 166 of 526 REJ09B0326 0600 ...
Page 190: ...Section 7 RAM Rev 6 00 Sep 12 2006 page 168 of 526 REJ09B0326 0600 ...
Page 298: ...Section 9 Timers Rev 6 00 Sep 12 2006 page 276 of 526 REJ09B0326 0600 ...
Page 378: ...Section 12 A D Converter Rev 6 00 Sep 12 2006 page 356 of 526 REJ09B0326 0600 ...
Page 446: ...Section 13 Electrical Characteristics Rev 6 00 Sep 12 2006 page 424 of 526 REJ09B0326 0600 ...