参数资料
型号: DS2149QN+
厂商: Maxim Integrated Products
文件页数: 22/32页
文件大小: 0K
描述: IC LIU T1/J1 5V 28-PLCC
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 37
类型: 线路接口装置(LIU)
规程: T1/J1
电源电压: 4.75 V ~ 5.25 V
安装类型: 表面贴装
封装/外壳: 28-LCC(J 形引线)
供应商设备封装: 28-PLCC(11.51x11.51)
包装: 管件
DS2149
29 of 32
AC CHARACTERISTICS: SERIAL PORT (MODE1 = 1)
(VDD = 5.0V
±5%, TA = -40°C to +85°C.) (Figure 12-1 and Figure 12-2)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
Setup Time
CS to SCLK
tCSS
50
ns
Setup Time SDI to SCLK
tSSS
50
ns
Hold Time SCLK to SDI
tSSH
50
ns
SCLK High/Low Time
tSLH
200
ns
SCLK Rise/Fall Time
tSRF
50
ns
SCLK to
CS Inactive
tLSC
50
ns
CS Inactive Time
tCM
250
ns
SCLK to SDO Valid
tSSV
50
ns
SCLK to SDO Tri-State
tSSH
100
ns
CS Inactive or SCLK to SDO Tri-State
tCSH
100
ns
Figure 12-1. Serial Bus Read Timing (MODE1 = 1)
Figure 12-2. Serial Bus Write Timing (MODE1 = 1)
SCLK
CS
HIGH-Z
SDO
t
LSC
HIGH-Z
LSB
MSB
t
CSH
t
SSV
SCLK
CS
t
LSC
HIGH-Z
SDO
HIGH-Z
LSB
MSB
t
CSH
t
SSV
CLKE
=
0
CLKE
=
1
MSB
SCLK
SDI
CS
t
CSS
t
SSS
t
SSH
t
SRF
t
SLH
t
LSC
t
CM
LSB
MSB
Data Byte
Control Byte
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