Datasheet

Section 10A I/O Ports
(H8S/2633, H8S/2632, H8S/2631, H8S/2633R)
R01UH0166EJ0600 Rev. 6.00 Page 403 of 1434
Mar 02, 2011
H8S/2633 Group, H8S/2633 F-ZTAT
TM
,
H8S/2633R F-ZTAT
TM
, H8S/2695
10A.5.3 Pin Functions
The pins of port 7 are multipurpose pins which function as 8-bit timer I/O pins, (TMRI01,
TMCI01, TMRI23, TMCI23, TMO0, TMO1, TMO2, and TMO3), DMAC I/O pins (DREQ0,
TEND0, DREQ1, and TEND1), bus control output pins (CS4 to CS7), SCI I/O pins (SCK3,
RxD3, and TxD3) and manual reset input pin (MRES). Table 10A.8 shows the functions of port 7
pins.
Table 10A.8 Port 7 Pin Functions
Pin Selection Method and Pin Functions
P77/TxD3 Switches as follows according to combinations of SCR TE bit of SCI3, and the
P77DDR bit.
TE 0 1
P77DDR 0 1 —
Pin function P77 input pin P77 output pin TxD3 output pin
P76/RxD3 Switches as follows according to combinations of SCR RE bit of SCI3 and the
P76DDR bit.
RE 0 1
P76DDR 0 1 —
Pin function P76 input pin P76 output pin RxD3 I/O pin
P75/TMO3/
SCK3
Switches as follows according to combinations of SMR C/A bit of SCI3, SCR CKE0
and CKE1 bits, TCSR3 OS3 to OS0 bits of the 8-bit timer, and the P75DDR bit.
OS3 to OS0 All 0 Any is 1
CKE1 0 1 —
C/A 0 1 — —
CKE0 0 1 — — —
P75DDR 0 1 — — — —
Pin function P75
input pin
P75
output pin
SCK3
output pin
SCK3
output pin
SCK3
input pin
TMO3
output