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GSM0128IG001
34
Revision Draft – 9/22/08
Diane, could you modify this table as per the one below?
Parameter
Parameter/
Conditions
MIN
TYP
MAX
UNIT
V
IL
V
IH
I
PU
I
IL
Input Voltage – Low or float
Input Voltage – High
Internal Pull-Up Resistor
Current Sink
0.7 x Vbat
-40
-31
0.3 x
V
BAT
1.95
-15
-2.0
V
dc
V
dc
µA
mA
ON Pulse Duration
10
50
mS
OFF Pulse Duration
Minimum is programable
(AT$OFFDLY)
10
100
5000
mS
Boot time
Time to boot from power on
to command prompt
1.1
Sec
6.8.5
Using VBAK (pin 36)
VBAK
is a backup voltage that can maintain the RTC clock and alarm functions. If
VBAK
is not present in the
system (intentionally or not) and
RADIO_PWR/RST
is active low, the RTC clock may still be powered if leakage
voltage exists on VCC. Otherwise the RTC clock will lose power and be reset when VCC is restored.
.
PARAMETER
PARAMETER / CONDITIONS
MIN
TYP
MAX
UNIT
Backup Voltage (Real-Time-Clock)
V
BACKUP
Backup Voltage for Real-Time-Clock
1.9
2.8
5.5
Vdc
I
BACKUP
Input Current (V
BACKUP
= 3.2 V, V
BAT
= 0 V,
No Load on GPIO or Serial Port)
30
Adc