I/O Memory Of I/O Ports - Epson S1C63454 Technical Manual

CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (I/O Ports)

4.6.5 I/O memory of I/O ports

Table 4.6.5.1 shows the I/O addresses and the control bits for the I/O ports.
Register
Address
D3 D2
IOC03 IOC02 IOC01
FF40H
R/W
PUL03 PUL02 PUL01
FF41H
R/W
P03 P02
FF42H
R/W
IOC13 IOC12 IOC11
FF44H
R/W
PUL13 PUL12 PUL11
FF45H
R/W
P13 P12
FF46H
R/W
0 0 SCTRG
FF70H
R
*1 Initial value at initial reset
*2 Not set in the circuit
*3 Constantly "0" when being read
38
Table 4.6.5.1 Control bits of I/O ports
∗1
D1 D0 Name Init
IOC03 0
IOC00
IOC02 0
IOC01 0
IOC00 0
PUL03 1
PUL00
PUL02 1
PUL01 1
PUL00 1
∗2
P03 –
P01 P00
∗2
P02 –
∗2
P01 –
∗2
P00 –
IOC13 0
IOC10
IOC12 0
IOC11 0
IOC10 0
PUL13 1
PUL10
PUL12 1
PUL11 1
PUL10 1
∗2
P13 –
P11 P10
∗2
P12 –
∗2
P11 –
∗2
P10 –
∗3 ∗2
0 –
∗3 ∗2
ESIF
0 –
SCTRG 0
R/W
ESIF 0
1 0
Output Input
Output Input
P00–P03 I/O control register
Output Input
Output Input
On Off
On Off
P00–P03 pull-up control register
On Off
On Off
High Low
High Low
P00–P03 I/O port data
High Low
High Low
Output Input
P13 I/O control register
functions as a general-purpose register when SIF (slave) is selected
Output Input
P12 I/O control register (ESIF=0)
functions as a general-purpose register when SIF is selected
Output Input
P11 I/O control register (ESIF=0)
functions as a general-purpose register when SIF is selected
Output Input P10 I/O control register (ESIF=0)
functions as a general-purpose register when SIF is selected
On Off P13 pull-up control register
functions as a general-purpose register when SIF (slave) is selected
On Off P12 pull-up control register (ESIF=0)
functions as a general-purpose register when SIF (master) is selected
SCLK (I) pull-up control register when SIF (slave) is selected
On Off P11 pull-up control register (ESIF=0)
functions as a general-purpose register when SIF is selected
On Off P10 pull-up control register (ESIF=0)
SIN pull-up control register when SIF is selected
High Low P13 I/O port data
functions as a general-purpose register when SIF (slave) is selected
High Low
P12 I/O port data (ESIF=0)
functions as a general-purpose register when SIF is selected
High Low
P11 I/O port data (ESIF=0)
functions as a general-purpose register when SIF is selected
High Low P10 I/O port data (ESIF=0)
functions as a general-purpose register when SIF is selected
Unused
Unused
Trigger Invalid Serial I/F clock trigger (writing)
Run Stop
Serial I/F clock status (reading)
SIF I/O
Serial I/F enable (P1 port function selection)
EPSON
Comment
S1C63454 TECHNICAL MANUAL