Epson S1C63616 Technical Manual page 27

Register
Address
D3 D2 D1
IOC23 IOC22 IOC21
FF29H
R/W
PUL23 PUL22 PUL21 PUL20
FF2AH
R/W
SMT23 SMT22 SMT21 SMT20
FF2BH
R/W
Table 4.1.1 (d) I/O memory map (FF29H-FF2BH)
∗1
D0 Name Init 1
IOC23 0 Output
IOC20
IOC22 0 Output
IOC21 0 Output
IOC20 0 Output
On
PUL23 1
PUL22 1 On
PUL21 1 On
PUL20 1 On
SMT23 1 Schmitt
SMT22 1 Schmitt
SMT21 1 Schmitt
SMT20 1 Schmitt
0
Input P23 I/O control register
functions as a general-purpose register when SIF or FOUT is used
Input P22 I/O control register
functions as a general-purpose register when SIF is used
Input
P21 I/O control register
functions as a general-purpose register when SIF is used
Input
P20 I/O control register
functions as a general-purpose register when SIF is used
Off
P23 pull-down control register
SS pull-down control register when SIF (slave, SS) is used
functions as a general-purpose register when SIF (slave, SRDY)
or FOUT is used
Off P22 pull-down control register
SIN pull-down control register when SIF is used
Off
P21 pull-down control register
functions as a general-purpose register when SIF (SOUT) is used
Off
P20 pull-down control register
SCLK (I) pull-down control register when SIF (slave) is used
functions as a general-purpose register when SIF (master) is used
CMOS P23 input interface level select register
SS input I/F level select register when SIF (slave, SS) is used
functions as a general-purpose register when SIF (slave, SRDY)
or FOUT is used
CMOS
P22 input interface level select register
SIN input interface level select register when SIF is used
CMOS P21 input interface level select register
functions as a general-purpose register when SIF (SOUT) is used
CMOS P20 input interface level select register
SCLK (I) input I/F level select register when SIF (slave) is used
functions as a general-purpose register when SIF (master) is used
SIC63616-(Rev. 1.0) NO. P20
Comment
3240-0412