参数资料
型号: DS17485S-5+
厂商: Maxim Integrated Products
文件页数: 26/31页
文件大小: 0K
描述: IC RTC 5V 4K NV RAM 24-SOIC
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 31
类型: 时钟/日历
特点: 警报器,夏令时,闰年,NVSRAM,方波输出
存储容量: 4KB
时间格式: HH:MM:SS(12/24 小时)
数据格式: YY-MM-DD-dd
接口: 并联
电源电压: 4.5 V ~ 5.5 V
电压 - 电源,电池: 2.5 V ~ 3.7 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 24-SOIC(0.295",7.50mm 宽)
供应商设备封装: 24-SOIC W
包装: 管件
DS17285/DS17287/DS17485/DS17487/DS17885/DS17887
Real-Time Clocks
4
_____________________________________________________________________
AC ELECTRICAL CHARACTERISTICS
(VCC = +2.7V to +3.7V, TA = Over the operating range, unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Cycle Time
tCYC
360
DC
ns
Pulse Width, RD or WR Low
PWRWL
200
ns
Pulse Width, RD or WR High
PWRWH
150
ns
Input Rise and Fall
tR, tF
30
ns
Chip-Select Setup Time Before
RD or WR
tCS
20
ns
Chip-Select Hold Time
tCH
0ns
Read-Data Hold Time
tDHR
10
90
ns
Write-Data Hold Time
tDHW
0ns
Address Setup Time to ALE Fall
tASL
40
ns
Address Hold Time to ALE Fall
tAHL
10
ns
RD or WR High Setup to ALE
Rise
tASD
30
ns
Pulse Width ALE High
PWASH
40
ns
Delay Time ALE Low to RD Low
tASED
30
ns
Output Data Delay Time from RD
tDDR
(Note 8)
20
200
ns
Data Setup Time
tDSW
70
ns
IRQ Release from RD
tIRD
2s
Write Timing
PWASH
tASED
PWRWH
PWRWL
tCS
tAHL
tASL
tDSW
tDHW
tCH
tASD
tCYC
CS
WR
AS
RD
AD0–AD7
WRITE
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