參數(shù)資料
型號(hào)： 7534
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(jī)
文件頁(yè)數(shù)： 12/55頁(yè)
文件大?。?/td> 610K
代理商： 7534
7534 Group
Rev.2.00 Jun 21, 2004 page 12 of 54
REJ03B0099-0200Z
I/O Ports
[Direction registers] PiD
The I/O ports have direction registers which determine the input/out-
put direction of each pin. Each bit in a direction register corresponds
to one pin, and each pin can be set to be input or output.
When “1” is set to the bit corresponding to a pin, this pin becomes an
output port. When “0” is set to the bit, the pin becomes an input port.
When data is read from a pin set to output, not the value of the pin
itself but the value of port latch is read. Pins set to input are floating,
and permit reading pin values.
If a pin set to input is written to, only the port latch is written to and the
pin remains floating.
[Pull-up control] PULL
By setting the pull-up control register (address 0016
16
), ports P0 and
P3 can exert pull-up control by program. However, pins set to output
are disconnected from this control and cannot exert pull-up control.
[Port P1P3 control] P1P3C
By setting the port P1P3 control register (address 0017
16
), a CMOS
input level or a TTL input level can be selected for ports P1
0
, P1
2,
P1
3,
P3
6
and P3
7
by program.
Then, as for the 36-pin version, set “1” to each bit 6 of the port P3
direction register and port P3 register.
As for the 32-pin version, set “1” to respective bits 5, 6, 7 of the port
P3 direction register and port P3 register.
Fig. 13 Structure of port P1P3 control register
Fig. 12 Structure of pull-up control register
Pull-up control register
(PULL: address 0016
16
)
P0
0
pull-up control bit
P0
1
pull-up control bit
P0
2
, P0
3
pull-up control bit
P0
4
– P0
7
pull-up control bit
P3
0
– P3
3
pull-up control bit
P3
4
pull-up control bit
P3
5
, P3
6
pull-up control bit
P3
7
pull-up control bit
Note :
Pins set to output ports are disconnected from pull-up control.
b7 b0
0: Pull-up off
1: Pull-up on
Initial value: FF
16
Port P1P3 control register
(P1P3C: address 0017
16
)
b7 b0
P3
7
/INT
0
input level selection bit
0 : CMOS level
1 : TTL level
P3
6
/INT
1
input level selection bit
0 : CMOS level
1 : TTL leve
P1
0
,P1
2
,P1
3
input level selection bit
0 : CMOS level
1 : TTL level
Not used
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
7534_06 制造商:RENESAS 制造商全稱(chēng):Renesas Technology Corp 功能描述:8-BIT SINGLE-CHIP MICROCOMPUTER
75340 功能描述:BIT MICRO HEX SYST4 4.0MM 28MM RoHS:否 類(lèi)別:工具 >> 螺釘和螺母驅(qū)動(dòng)器 - 刀片和位 系列:系統(tǒng) 4 標(biāo)準(zhǔn)包裝:1 系列:TorqueVario™ 類(lèi)型:十字槽刀片 尺寸:#2 長(zhǎng)度:7.48"（190mm） 特點(diǎn):絕緣達(dá) 10,000V 重量:0.07 磅（31.75g）
753-40.4M-A 制造商:OSCILENT 制造商全稱(chēng):Oscilent Corporation 功能描述:Ceramic Trap For TV/VCR
753-40.7M-A 制造商:OSCILENT 制造商全稱(chēng):Oscilent Corporation 功能描述:Ceramic Trap For TV/VCR
753-402 制造商:WAGO Innovative Connections 功能描述:4DI 24V DC 3,0ms
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