参数资料
型号: 7548
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: 19/73页
文件大小: 1255K
代理商: 7548
Rev.2.00
REJ03B0210-0200
Mar 15, 2007
Page 19 of 70
7548 Group
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
Termination of unused pins
Termination of common pins
I/O ports:
Select an input port or an output port and follow
each processing method.
Output ports: Open.
Input ports:
If the input level become unstable, through current
flow to an input circuit, and the power supply
current may increase.
Especially, when expecting low consumption
current (at STP or WIT instruction execution etc.),
pull-up or pull-down input ports to prevent
through current (built-in resistor can be used).
We recommend processing unused pins through a
resistor which can secure IOH (avg) or IOL (avg).
Because, when an I/O port or a pin which have an
output function is selected as an input port, it may
operate as an output port by incorrect operation
etc.
Table 7
Termination of unused pins
Pin
Termination
P0
0
/INT
0
P0
1
/INT
1
P0
2
P0
3
P0
4
/R
X
D
P0
5
/T
X
D
P0
6
/S
CLK
P0
7
/S
RDY
P1
0
/AN
0
/KEY
0
/CMP
0
P1
1
/AN
1
/KEY
1
/CMP
1
P1
2
/AN
2
/KEY
2
/CMP
2
P1
3
/AN
3
/KEY
3
/T2
OUT
P1
4
/AN
4
/KEY
4
P1
5
/AN
5
/KEY
5
P2
0
/X
OUT
/X
COUT
Perform termination of I/O port.
Set the direction register to “1”, and
perform termination of output port.
Perform termination of I/O port.
P2
1
/X
IN
/X
CIN
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相关代理商/技术参数
参数描述
7548_07 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:Standard Characteristics
7548_0710 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
75481-001 功能描述:集管和线壳 BACKPANEL PINS RoHS:否 产品种类:1.0MM Rectangular Connectors 产品类型:Headers - Pin Strip 系列:DF50 触点类型:Pin (Male) 节距:1 mm 位置/触点数量:16 排数:1 安装风格:SMD/SMT 安装角:Right 端接类型:Solder 外壳材料:Liquid Crystal Polymer (LCP) 触点材料:Brass 触点电镀:Gold 制造商:Hirose Connector
75481-002 功能描述:集管和线壳 BERGPIN - WITH LARGE STA-R RoHS:否 产品种类:1.0MM Rectangular Connectors 产品类型:Headers - Pin Strip 系列:DF50 触点类型:Pin (Male) 节距:1 mm 位置/触点数量:16 排数:1 安装风格:SMD/SMT 安装角:Right 端接类型:Solder 外壳材料:Liquid Crystal Polymer (LCP) 触点材料:Brass 触点电镀:Gold 制造商:Hirose Connector
75481-004 功能描述:集管和线壳 BERGPIN RoHS:否 产品种类:1.0MM Rectangular Connectors 产品类型:Headers - Pin Strip 系列:DF50 触点类型:Pin (Male) 节距:1 mm 位置/触点数量:16 排数:1 安装风格:SMD/SMT 安装角:Right 端接类型:Solder 外壳材料:Liquid Crystal Polymer (LCP) 触点材料:Brass 触点电镀:Gold 制造商:Hirose Connector