DS1321_04 Datasheet, PDF (7/12 Pages) Dallas Semiconductor – Flexible Nonvolatile Controller with Lithium Battery Monitor

CAPACITANCE
PARAMETER
Input Capacitance
( CEI *, TOL, MODE)
Output Capacitance
( CEO *, BW , RST )
SYMBOL MIN
C_IN
C_OUT
AC ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL MIN
CEI to CEO Propagation Delay
t_PD
CE Pulse Width
t_CE
V_CC Valid to End of
t_REC
Write Protection
V_CC Valid to CEI Inactive
V_CC Valid to RST Inactive
V_CC Valid to BW Valid
t_PU
t_RPU
150
t_BPU
AC ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL MIN
V_CC Slew Rate
V_CC Fail Detect to RST Active
V_CC Slew Rate
t_F
150
t_RPD
t_R
15
AC ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL MIN
Battery Test to BW Active
t_BW
Battery Test Cycle-Normal
t_BTCN
Battery Test Cycle-Warning
t_BTCW
Battery Test Pulse Width
t_BTPW
Battery Detach to Battery Attach
t_BDBA
7
Battery Attach to BW Inactive
t_BABW
TYP
MAX
7
7
DS1321
(t_A =25°C)
UNITS NOTES
pF
pF
(-40°C to +85°C; V_CCI ³ V_CCTP)
TYP MAX UNITS NOTES
12
20
ns
1.5
µs
11
125
ms
9
2
ms
200
350
ms
10
1
s
10
(-40°C to +85°C; V_CCI < V_CCTP)
TYP MAX UNITS NOTES
µs
15
µs
10
µs
(-40°C to +85°C; V_CCI ³ V_CCTP)
TYP MAX UNITS NOTES
1
s
10
24
hr
5
s
1
s
s
1
s
10
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