參數(shù)資料
型號： S1C63406F
元件分類： 微控制器/微處理器
英文描述： 4-BIT, MROM, 4.2 MHz, MICROCONTROLLER, PQFP128
封裝： PLASTIC, TQFP15-128
文件頁數(shù)： 87/144頁
文件大?。?/td> 1160K
代理商： S1C63406F
S1C63406 TECHNICAL MANUAL
EPSON
39
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.
Table 4.6.5.1 Control bits of I/O ports
Address
Comment
D3
D2
Register
D1
D0
Name
Init 1
10
FF49H
PPL23
PPL22
PPL21
PPL20
R/W
PPL23
PPL22
PPL21
PPL20
1
On
Off
P23 pull-up control register
General-purpose register when SIF (clock sync. slave) is selected
P22 pull-up control register
General-purpose register when SIF (clock sync. master) is selected
SCLK (I) pull-up control register
when SIF (clock sync. slave) is selected
P21 pull-up control register (ESIF=0)
General-purpose register when SIF is selected
P20 pull-up control register (ESIF=0)
SIN pull-up control register when SIF is selected
FF48H
IOC23
IOC22
IOC21
IOC20
R/W
IOC23
IOC22
IOC21
IOC20
0
Output
Input
P23 I/O control register
General-purpose register when SIF (clock sync. slave) is selected
P22 I/O control register
General-purpose register when SIF (clock sync.) is selected
P21 I/O control register (ESIF=0)
General-purpose register when SIF is selected
P20 I/O control register (ESIF=0)
General-purpose register when SIF is selected
FF4AH
P23
(XSRDY)
P22
(XSCLK)
P21
(SOUT)
P20
(SIN)
R/W
P23
P22
P21
P20
– 2
High
Low
P23 I/O port data
General-purpose register when SIF (clock sync. slave) is selected
P22 I/O port data
General-purpose register when SIF (clock sync.) is selected
P21 I/O port data (ESIF=0)
General-purpose register when SIF is selected
P20 I/O port data (ESIF=0)
General-purpose register when SIF is selected
0
Clk-sync. master
2
Async. 7-bit
1
Clk-sync. slave
3
Async. 8-bit
[SMD1, 0]
Mode
[SMD1, 0]
Mode
FF70H
0
SMD1
SMD0
ESIF
RR/W
0 3
SMD1
SMD0
ESIF
– 2
0
0SIF
I/O
Unused
Serial I/F
mode selection
Serial I/F enable (P2x port function selection)
*1 Initial value at initial reset
*2 Not set in the circuit
*3 Constantly "0" when being read
ESIF: Serial interface enable register (FF70HD0)
Selects function for P20–P23.
When "1" is written: Serial interface input/output port
When "0" is written: I/O port
Reading: Valid
When using the serial interface, write "1" to this register and when P20–P23 are used as the I/O port,
write "0". The terminal configuration within P20–P23 that are used for the serial interface is decided by
the transfer mode (7-bit asynchronous, 8-bit asynchronous, clock synclonous slave, clock synchronous
master) selected with the SMD1 and SMD0 registers.
In the clock synchronous slave mode, all the P20–P23 ports are set to the serial interface input/output
port. In the clock synchronous master mode, P20–P22 are set to the serial interface input/output port and
P23 can be used as the I/O port. In the 8/7-bit asynchronous mode, P20 and P21 are set to the serial
interface input/output port and P22 and P23 can be used as the I/O port.
At initial reset, this register is set to "0".
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