ST24LC21 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
ST24LC21 Datasheet PDF : 18 Pages
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ST24LC21
Figure 2A. DIP Pin Connections
Figure 2B. SO Pin Connections
ST24LC21
NC 1
NC 2
NC 3
VSS 4
8 VCC
7 VCLK
6 SCL
5 SDA
AI01499
ST24LC21
NC
NC
NC
VSS
1
8
2
7
3
6
4
5
AI01500
VCC
VCLK
SCL
SDA
Warning: NC = Not Connected
Warning: NC = Not Connected
Table 2. Absolute Maximum Ratings (1)
Symbol
TA
TSTG
TLEAD
Parameter
Ambient Operating Temperature
Storage Temperature
Lead Temperature, Soldering
(SO8 package)
(PSDIP8 package)
grade 1
40 sec
10 sec
Value
0 to 70
–65 to 150
215
260
Unit
°C
°C
°C
VIO
Input or Output Voltages
–0.3 to 6.5
V
VCC
VESD
Supply Voltage
Electrostatic Discharge Voltage (Human Body model) (2)
Electrostatic Discharge Voltage (Machine model) (3)
–0.3 to 6.5
V
4000
V
500
V
Notes: 1. Except for the rating "Operating Temperature Range", stresses above those listed in the Table "Absolute Maximum Ratings"
may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other
conditions above those indicated in the Operating sections of this specification is not implied. Exposure to Absolute Maximum
Rating conditions for extended periods may affect device reliability. Refer also to the SGS-THOMSON SURE Program and other
relevant quality documents.
2. MIL-STD-883C, 3015.7 (100pF, 1500 Ω).
3. EIAJ IC-121 (Condition C) (200pF, 0 Ω).
Table 3. Device Select Code
Device Code
Chip Enable
RW
Bit
b7
b6
b5
b4
b3
b2
b1
b0
Device Select
1
0
1
0
X
X
X
RW
Note: The MSB b7 is sent first.
X = 0 or 1.
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