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PDF AT24C04A Data sheet ( Hoja de datos )
| Número de pieza | AT24C04A | |
| Descripción | 2-Wire Serial EEPROM | |
| Fabricantes | ATMEL Corporation | |
| Logotipo |  |
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Features
• Write Protect Pin for Hardware Data Protection
– Utilizes Different Array Protection Compared to the AT24C02/04
• Low-voltage and Standard-voltage Operation
– 2.7 (VCC = 2.7V to 5.5V)
– 1.8 (VCC = 1.8V to 5.5V)
• Internally Organized 256 x 8 (2K), 512 x 8 (4K)
• Two-wire Serial Interface
• Schmitt Trigger, Filtered Inputs for Noise Suppression
• Bidirectional Data Transfer Protocol
• 100 kHz (1.8V) and 400 kHz (2.5V, 2.7V, 5V) Clock Rate
• 8-byte Page (2K), 16-byte Page (4K) Write Modes
• Partial Page Writes Allowed
• Self-timed Write Cycle (5 ms Max)
• High Reliability
– Endurance: One Million Write Cycles
– Data Retention: 100 Years
• Automotive Grade, Extended Temperature and Lead-Free/Halogen-Free Devices
Available
• 8-lead PDIP, 8-lead JEDEC SOIC, 8-lead MAP, 8-lead TSSOP and 8-ball dBGA2 Packages
• Die Sales: Wafer Form, Waffle Pack, and Bumped Wafers.
Two-wire Serial
EEPROM
2K (256 x 8)
4K (512 x 8)
AT24C02A
Description
The AT24C02A/04A provides 2048/4096 bits of serial electrically erasable and program-
mable read-only memory (EEPROM) organized as 256/512 words of 8 bits each. The
device is optimized for use in many industrial and commercial applications where low-
power and low-voltage operation are essential. The AT24C02A/04A is available in
space-saving 8-lead PDIP, 8-lead JEDEC SOIC, 8-lead MAP and 8-lead TSSOP pack-
ages and is accessed via a two-wire serial interface. In addition, the entire family is
available in 2.7V (2.7V to 5.5V) and 1.8V (1.8V to 5.5V) versions.
AT24C04A
Table 1. Pin Configuration
Pin Name
Function
A0–A2
Address Inputs
SDA
Serial Data
SCL Serial Clock Input
WP Write Protect
NC No-connect
8-lead TSSOP
A0
A1
A2
GND
1
2
3
4
8 VCC
7 WP
6 SCL
5 SDA
8-lead PDIP
A0
A1
A2
GND
1
2
3
4
8 VCC
7 WP
6 SCL
5 SDA
8-lead MAP
VCC 8
1 A0
WP 7
2 A1
SCL 6
3 A2
SDA 5
4 GND
Bottom View
8-lead SOIC
A0
A1
A2
GND
1
2
3
4
8 VCC
7 WP
6 SCL
5 SDA
8-ball dBGA2
VCC 8
WP 7
SCL 6
SDA 5
1 A0
2 A1
3 A2
4 GND
Bottom View
Rev. 0976Q–SEEPR–8/05
1
1 page  
AT24C02A/04A
Table 5. AC Characteristics
Applicable over recommended operating range from TAI = −40°C to +85°C, VCC = +1.8V to +5.5V, CL = 1 TTL Gate and 100
pF (unless otherwise noted)
1.8-volt
2.5, 2.7, 5.0-volt
Symbol
Parameter
Min Max Min Max
Units
fSCL
tLOW
tHIGH
tI
tAA
tBUF
Clock Frequency, SCL
Clock Pulse Width Low
Clock Pulse Width High
Noise Suppression Time(2)
Clock Low to Data Out Valid
Time the bus must be free before
a new transmission can start(1)
4.7
4.0
0.1
4.7
100 400
1.2
0.6
100 50
4.5 0.1 0.9
1.2
kHz
µs
µs
ns
µs
µs
tHD.STA
tSU.STA
tHD.DAT
tSU.DAT
tR
tF
tSU.STO
tDH
tWR
Endurance(1)
Start Hold Time
Start Set-up Time
Data In Hold Time
Data In Set-up Time
Inputs Rise Time(1)
Inputs Fall Time(1)
Stop Set-up Time
Data Out Hold Time
Write Cycle Time
5.0V, 25°C, Page Mode
4.0 0.6
µs
4.7 0.6
µs
00
µs
200 100
ns
1.0 0.3 µs
300 300 ns
4.7 0.6
µs
100 50
ns
5 5 ms
1M 1M Write Cycles
Note: 1. This parameter is characterized and is not 100% tested.
0976Q–SEEPR–8/05
5
5 Page 
AT24C02A/04A
Figure 12. Sequential Read
tial read will continue. The sequential read operation is terminated when the
microcontroller does not respond with a “0” but does generate a following stop condition,
see Figure 12.
0976Q–SEEPR–8/05
11
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet AT24C04A.PDF ] | |
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