CAT1640LI-25-G ON Semiconductor, CAT1640LI-25-G Datasheet - Page 11
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CAT1640LI-25-G
Manufacturer Part Number
CAT1640LI-25-G
Description
IC SUPERVSR CPU 64K EEPROM 8PDIP
Manufacturer
ON Semiconductor
Type
Simple Reset/Power-On Resetr
Datasheet
1.CAT1640WI-42-T3.pdf
(18 pages)
Specifications of CAT1640LI-25-G
Number Of Voltages Monitored
1
Output
Open Drain or Open Collector
Reset
Active Low
Reset Timeout
130 ms Minimum
Voltage - Threshold
2.55V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Monitored Voltage
3 V, 3.3 V, 5 V
Output Type
Active Low, Open Drain
Manual Reset
Resettable
Watchdog
No Watchdog
Battery Backup Switching
No Backup
Supply Voltage (max)
5.5 V
Supply Voltage (min)
3 V
Supply Current (typ)
3000 uA
Maximum Power Dissipation
1000 mW
Maximum Operating Temperature
+ 85 C
Mounting Style
Through Hole
Minimum Operating Temperature
- 40 C
Power Fail Detection
No
Undervoltage Threshold
2.55 V
Overvoltage Threshold
2.7 V
Power-up Reset Delay (typ)
270 ms
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
CAT1640LI-25-G
Manufacturer:
TI
Quantity:
2 000
Acknowledge Polling
Figure 10. Immediate Address Read Timing
© 2009 SCILLC. All rights reserved.
Characteristics subject to change without notice.
Disabling of the inputs can be used to take advantage of
the typical write cycle time. Once the stop condition is
issued to indicate the end of the host’s write opration, the
CAT1640/41 initiates the internal write cycle. ACK polling
can be initiated immediately. This involves issuing the
start condition followed by the slave address for a write
operation. If the device is still busy with the write operation,
no ACK will be returned. If a write operation has
completed, an ACK will be returned and the host can
then proceed with the next read or write operation.
SDA
SCL
BUS ACTIVITY:
SDA LINE
MASTER
DATA OUT
8TH BIT
8
S
S
A
R
T
T
ADDRESS
SLAVE
11
Read Operations
The READ operation for the CAT1640/41 is initiated in
the same manner as the write operation with one
exception, that R/W bit is set to one. Three different
READ operations are possible: Immediate/Current
Address READ, Selective/Random READ and
Sequential READ.
9
C
A
K
NO ACK
DATA
N
O
C
A
K
P
O
S
T
P
CAT1640, CAT1641
STOP
Doc No. MD-3012, Rev. D