参数资料
型号: DS1330WP-150+
厂商: Maxim Integrated Products
文件页数: 8/10页
文件大小: 0K
描述: IC NVSRAM 256KBIT 150NS 34PCM
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 40
格式 - 存储器: RAM
存储器类型: NVSRAM(非易失 SRAM)
存储容量: 256K (32K x 8)
速度: 150ns
接口: 并联
电源电压: 3 V ~ 3.6 V
工作温度: 0°C ~ 70°C
封装/外壳: 34-PowerCap? 模块
供应商设备封装: 34-PowerCap 模块
包装: 管件
DS1330W
POWER-DOWN/POWER-UP TIMING
(T A : See Note 10)
PARAMETER
V C C Fail Detect to CE and
WE Inactive
SYMBOL
t PD
MIN
TYP
MAX
1.5
UNITS
μs
NOTES
11
V CC slew from V TP to 0V
t F
150
μs
V CC Fail Detect to
RST Active
V CC slew from 0V to V TP
V CC Valid to CE and
WE Inactive
V CC Valid to End of
Write Protection
t RPD
t R
t PU
t REC
150
15
2
125
μs
μs
ms
ms
14
V CC Valid to RST Inactive
V CC Valid to BW Valid
t RPU
t BPU
150
200
350
1
ms
s
14
14
BATTERY WARNING TIMING
(T A : See Note 10)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Battery Test Cycle
Battery Test Pulse Width
Battery Test to BW Active
t BTC
t BTPW
t BW
24
1
1
hr
s
s
(T A = +25°C)
PARAMETER
Expected Data
Retention Time
SYMBOL
t DR
MIN
10
TYP
MAX
UNITS
years
NOTES
9
WARNING:
Under no circumstance are negative undershoots, of any amplitude, allowed when device is in battery
backup mode.
NOTES:
1. W E is high for a Read Cycle.
2. OE = V IH or V IL . If OE = V IH during write cycle, the output buffers remain in a high impedance state.
3. t WP is specified as the logical AND of CE and WE . t WP is measured from the latter of CE or WE
going low to the earlier of CE or WE going high.
4. t DS is measured from the earlier of CE or WE going high.
5. These parameters are sampled with a 5 pF load and are not 100% tested.
6. If the CE low transition occurs simultaneously with or latter than the WE low transition, the output
buffers remain in a high impedance state during this period.
7. If the CE high transition occurs prior to or simultaneously with the WE high transition, the output
buffers remain in high-impedance state during this period.
8. If WE is low or the WE low transition occurs prior to or simultaneously with the CE low transition,
the output buffers remain in a high-impedance state during this period.
8 of 10
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