參數(shù)資料
型號： M38039M4L-XXXSP
廠商： Renesas Technology Corp.
英文描述： SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述： 單芯片8位CMOS微機
文件頁數(shù)： 16/119頁
文件大?。?/td> 1575K
代理商： M38039M4L-XXXSP
Rev.1.00
REJ03B0212-0100
Apr 2, 2007
Page 16 of 117
3803 Group (Spec.L)
I/O PORTS
The I/O ports have direction registers which determine the
input/output direction of each individual pin. Each bit in a
direction register corresponds to one pin, and each pin can be set
to be input port or output port.
When “0” is written to the bit corresponding to a pin, that pin
becomes an input pin. When “1” is written to that bit, that pin
becomes an output pin.
If data is read from a pin which is set to output, the value of the
port output latch is read, not the value of the pin itself. Pins set to
input are floating. If a pin set to input is written to, only the port
output latch is written to and the pin remains floating.
By setting the port P0 pull-up control register (address 0FF0
16
)
to the port P6 pull-up control register (address 0FF6
16
) ports can
control pull-up with a program. However, the contents of these
registers do not affect ports programmed as the output ports.
NOTES:
1. Refer to the applicable sections how to use double-function ports as function I/O ports.
2. Make sure that the input level at each pin is either 0 V or V
CC
during execution of the STP instruction.
When an input level is at an intermediate potential, a current will flow from V
CC
to V
SS
through the input-stage gate.
Table 6
I/O port function
Pin
Name
Input/
Output
Input/output,
individual
bits
I/O Structure
Non-Port Function
Related SFRs
Ref.
No.
(1)
(2)
P0
0
/AN
8
P0
7
/AN
15
P1
0
/INT
41
P1
1
/INT
01
P1
2
P1
7
P2
0
(LED
0
)
P2
7
(LED
7
)
P3
0
/DA
1
P3
1
/
DA
2
P3
2
, P3
3
Port P0
Port P1
CMOS compatible
input level
CMOS 3-state
output
A/D converter input
External interrupt input
AD/DA control register
Interrupt edge selection register
(3)
Port P2
Port P3
D/A converter output
AD/DA control register
(4)
CMOS compatible
input level
N-channel
open-drain output
CMOS compatible
input level
CMOS 3-state
output
(5)
P3
4
/R
X
D
3
P3
5
/T
X
D
3
P3
6
/S
CLK3
P3
7
/S
RDY3
P4
0
/INT
40
/
X
COUT
P4
1
/INT
00
/
X
CIN
P4
2
/INT
1
P4
3
/INT
2
P4
4
/R
X
D
1
P4
5
/T
X
D
1
P4
6
/S
CLK1
P4
7
/S
RDY1
/CNTR
2
Serial I/O3 function I/O
Serial I/O3 control register
UART3 control register
(6)
(7)
(8)
(9)
(10)
(11)
(2)
Port P4
External interrupt input
Sub-clock generating circuit
External interrupt input
Interrupt edge selection register
CPU mode register
Interrupt edge selection register
Serial I/O1 function I/O
Serial I/O1 control register
UART1 control register
(6)
(7)
(8)
(12)
Serial I/O1 function I/O
Timer Z function I/O
Serial I/O2 function I/O
Serial I/O1 control register
Timer Z mode register
Serial I/O2 control register
P5
0
/S
IN2
P5
1
/S
OUT2
P5
2
/S
CLK2
P5
3
/S
RDY2
P5
4
/CNTR
0
P5
5
/CNTR
1
P5
6
/PWM
P5
7
/INT
3
P6
0
/AN
0
P6
7
/AN
7
Port P5
(13)
(14)
(15)
(16)
(17)
Timer X, Y function I/O
Timer XY mode register
PWM output
External interrupt input
A/D converter input
PWM control register
Interrupt edge selection register
AD/DA control register
(18)
(2)
(1)
Port P6
相關(guān)PDF資料
PDF描述
M38039M4L-XXXWG 9-Mbit (256K x 36/512K x 18) Flow-Through SRAM; Architecture: Standard Sync, Flow-through; Density: 9 Mb; Organization: 256Kb x 36; Vcc (V): 3.1 to 3.6 V
M38039M4-XXXHP SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M38039M4-XXXKP 9-Mbit (256K x 36/512K x 18) Flow-Through SRAM; Architecture: Standard Sync, Flow-through; Density: 9 Mb; Organization: 256Kb x 36; Vcc (V): 3.1 to 3.6 V
M38039M4-XXXSP SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M38039M4-XXXWG SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
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