參數(shù)資料
型號(hào)： S1C63466D
元件分類： 微控制器/微處理器
英文描述： 4-BIT, MROM, 4.1 MHz, MICROCONTROLLER, UUC140
封裝： DIE-140
文件頁數(shù)： 79/135頁
文件大?。?/td> 1053K
代理商： S1C63466D
40
EPSON
S1C63466 TECHNICAL MANUAL
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (I/O Ports)
4.6 I/O Ports (P00–P03, P10–P13 and P20–P23)
4.6.1 Configuration of I/O ports
The S1C63466 has 12 bits 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-up control
register (PUL)
Mask option
VDD
Fig. 4.6.1.1 Configuration of I/O port
The I/O port terminals P10 to P13 are shared with the serial interface input/output terminals. The P22
and P23 terminals are shared with the special output (CL, FR) terminals. The software can select the
function to be used.
At initial reset, these 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
P00–P03
P10
P11
P12
P13
P20
P21
P22
P23
Terminal status
at initial reset
P00–P03 (Input & pull-up
)
P10 (Input & pull-up
)
P11 (Input & pull-up
)
P12 (Input & pull-up
)
P13 (Input & pull-up
)
P20 (Input & pull-up
)
P21 (Input & pull-up
)
P22 (Input & pull-up
)
P23 (Input & pull-up
)
Special output
CL
FR
P00–P03 P00–P03
P20
P21
CL
FR
Serial I/F
Master
Slave
P00–P03 P00–P03
SIN(I)
SOUT(O) SOUT(O)
SCLK(O) SCLK(I)
P13
SRDY(O)
P20
P21
When "with pull-up resistor" is selected by the mask option
(high impedance when "gate direct" is set)
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 4.11, "Serial Interface", for control of the serial interface.
相關(guān)PDF資料
PDF描述
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