SH7050 Datasheet, PDF (539/841 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH RISC engine Family/

Section 17 I/O Ports (I/O)
Table 17.2 Port A Data Register (PADR) Read/Write Operations
PAIOR
0
1
Pin Function
General input
Other than general
input
General output
Other than general
output
Read
Pin state
Pin state
PADR value
PADR value
Write
Value is written to PADR, but does not affect
pin state
Value is written to PADR, but does not affect
pin state
Write value is output from pin (POD pin = high)
High impedance regardless of PADR value
(POD pin = low)
Value is written to PADR, but does not affect
pin state
17.3 Port B
Port B is an input/output port with the 12 pins shown in figure 17.2.
Port B
Expanded mode
with ROM disabled
Expanded mode
with ROM enabled
A21 (output)
A20 (output)
PB11 (input/output)/
A21 (output)/POD (input)
PB10 (input/output)/A20 (output)
A19 (output)
PB9 (input/output)/A19 (output)
A18 (output)
PB8 (input/output)/A18 (output)
A17 (output)
PB7 (input/output)/A17 (output)
A16 (output)
PB6 (input/output)/A16 (output)
PB5 (input/output)/TCLKB (input)
PB4 (input/output)/TCLKA (input)
PB3 (input/output)/TO9 (output)
PB2 (input/output)/TO8 (output)
PB1 (input/output)/TO7 (output)
PB0 (input/output)/TO6 (output)
Single-chip mode
PB11 (input/output)/
POD (input)
PB10 (input/output)
PB9 (input/output)
PB8 (input/output)
PB7 (input/output)
PB6 (input/output)
Figure 17.2 Port B
Rev. 5.00 Jan 06, 2006 page 519 of 818
REJ09B0273-0500