參數(shù)資料
型號: S1C63158D0A010P
元件分類: 微控制器/微處理器
英文描述: 4-BIT, FLASH, 4 MHz, MICROCONTROLLER, UUC53
封裝: DIE-53
文件頁數(shù): 102/159頁
文件大?。?/td> 1200K
代理商: S1C63158D0A010P
S1C63808 TECHNICAL MANUAL
EPSON
39
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (I/O Ports)
4.6 I/O Ports (P00–P03, P10–P13, P20–P23, P30–P33 and P40–P43)
4.6.1 Configuration of I/O ports
The S1C63808 has 20 bits of general-purpose I/O ports. Figure 4.6.1.1 shows the configuration of the I/O
port.
Address
Data
register
Data
bus
Pxx
Address
I/O control
register (IOC)
Pull-down control
register (PUL)
Mask
option
VSS
Fig. 4.6.1.1 Configuration of I/O port
The I/O port terminals P10 to P13 and P20 to P23 are shared with the serial interface input/output
terminals. The software can select the function to be used.
At initial reset, these terminals are all set to the I/O port.
Table 4.6.1.1 shows the setting of the input/output terminals by function selection.
Table 4.6.1.1 Function setting of input/output terminals
Terminal
name
P00–P03
P10
P11
P12
P13
P20
P21
P22
P23
P30–P33
P40–P43
Terminal status
at initial reset
P00–P03 (Input & pulled down
)
P10
(Input & pulled down
)
P11
(Input & pulled down
)
P12
(Input & pulled down
)
P13
(Input & pulled down
)
P20
(Input & pulled down
)
P21
(Input & pulled down
)
P22
(Input & pulled down
)
P23
(Input & pulled down
)
P30–P33 (Input & pulled down
)
P40–P43 (Input & pulled down
)
When "with pull-down resistor" is selected by the mask option
(high impedance when "gate direct" is set)
Serial I/F
Clk-sync. Master
P00–P03
SIN1(I)
SOUT1(O)
SCLK1(O)
P13
SIN2(I)
SOUT2(O)
SCLK2(O)
P23
P30–P33
P40–P43
Clk-sync. Slave
P00–P03
SIN1(I)
SOUT1(O)
SCLK1(I)
SRDY1(O)
SIN2(I)
SOUT2(O)
SCLK2(I)
SRDY2(O)
P30–P33
P40–P43
Async.
P00–P03
SIN1(I)
SOUT1(O)
P12
P13
SIN2(I)
SOUT2(O)
P22
P23
P30–P33
P40–P43
When these ports are used as I/O ports, the ports can be set to either input mode or output mode indi-
vidually (in 1-bit unit). Modes can be set by writing data to the I/O control registers.
Refer to Section 4.10, "Serial Interface", for control of the serial interface.
Note: If an output of this IC is used to drive an external component that consumes a large amount of
current such as a bipolar transistor, design the pattern of traces on the printed circuit board so that
the operation of the external component does not affect the IC power supply. Refer to <Output
Terminals> in Section 5.3, "Precautions on Mounting", for more information.
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