Ac electrical characteristics: eprom programming, Ac electrical characteristics: 1-wire interface – Rainbow Electronics DS25LV02 User Manual
Page 3
DS25LV02: Low-Voltage 1024-Bit EPROM
3 of 17
AC ELECTRICAL CHARACTERISTICS: EPROM PROGRAMMING
(3.0V
£ V
DD
£ 5.5V, T
A
= -30°C to +50°C.)
PARAMETER SYMBOL CONDITIONS MIN
TYP
MAX
UNITS
Programming Pulse Width
t
PP
(Notes 1, 2, 5, 6)
480
5000
ms
Program Voltage Rise Time
t
RP
(Notes 1, 2, 5)
0.5
5.0
ms
Program Voltage Fall Time
t
FP
(Notes 1, 2, 5)
0.5
5.0
ms
Programming Current: DQ Pin
I
PP
(Notes 2, 5, 7)
6
10
mA
AC ELECTRICAL CHARACTERISTICS: 1-Wire INTERFACE
(2.2V
£ V
DD
£ 5.5V, T
A
= -30
°C to +85°C.)
PARAMETER SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Time Slot
t
SLOT
60
120
ms
Recovery Time
t
REC
1
ms
Write-0 Low Time
t
LOW0
60
120
ms
Write-1 Low Time
t
LOW1
1
15
ms
Read-Data Valid
t
RDV
15
ms
Reset-Time High
t
RSTH
480
ms
Reset-Time Low
t
RSTL
480
960
ms
Presence-Detect High
t
PDH
15
60
ms
Presence-Detect Low
t
PDL
60
240
ms
Delay to Program Pulse
t
DP
5
ms
Delay to Verify
t
DV
5
ms
DQ Capacitance
C
DQ
50
pF
Note 1:
All voltages are referenced to V
SS
.
Note 2:
Programming of the EPROM Data and EPROM Status fields require a limited temperature range of 0
°C to 50°C and limited V
DD
voltage range of 3.0V to 5.5V.
Note 3:
Storage for t
EES
at +50
°C.
Note 4:
DQ < V
IL
for t > 1.5ms or DQ > V
IH
for t > 1.5ms [1-Wire oscillator shut down].
Note 5:
Programming pulse on DQ pin must be shaped to conform with rise, fall, and width timing specifications. See Figure 7. EPROM
Programming Diagram).
Note 6:
The accumulative duration of all programming pulses for each address must not exceed 5ms.
Note 7:
Specification is guaranteed by design.