参数资料
型号: 7534
厂商: Renesas Technology Corp.
英文描述: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述: 单芯片8位CMOS微机
文件页数: 14/55页
文件大小: 610K
代理商: 7534
7534 Group
Rev.2.00 Jun 21, 2004 page 14 of 54
REJ03B0099-0200Z
Fig. 14 Block diagram of ports (1)
Data bus
+
(1) Port P0
Data bus
Direction
register
Port latch
Pull-up control
To key input interrupt
generating circuit
Data bus
Direction
register
Port latch
Serial I/O1 mode selection bit (b7)
Serial I/O1 mode selection bit (b6)
Receive enable bit
Serial I/O1 mode selection bit (b7)
Serial I/O1 mode selection bit (b6)
P1
,P1
,P1
input
level selection bit
D- input
D- output
Serial I/O1 input
USB output enable
(internal signal)
USB differential input
D+ input
D+ output
Serial I/O1 output
USB output enable
(internal signal)
Direction
register
Port latch
(3) Port P1
1
P-channel output disable bit
(2) Port P1
0
(4) Port P1
2
(5) Port P1
3
Data bus
Direction
register
P1
0
,P1
2
,P1
3
input
level selection bit
S
CLK
pin selection bit
Port latch
Serial I/O2 clock output
Serial I/O2 clock input
Serial I/O2 clock output
Serial I/O2 clock input
P1
0
,P1
2
,P1
3
input
level selection bit
Data bus
Direction
register
Signals during the
S
DATA
output action
S
DATA
pin selection bit
Port latch
S
DATA
pin
selection bit
: P1
0
, P1
2
, P1
3
, P3
6
, P3
7
input levels are switched to the CMOS/TTL level by the port P1P3 control register.
When the TTL level is selected, there is no hysteresis characteristics.
*
Serial I/O1 mode selection bit (b7)
Serial I/O1 mode selection bit (b6)
Serial I/O1 mode selection bit (b7)
Serial I/O1 mode selection bit (b6)
Transmit enable bit
*
*
*
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