Features
•Serial Peripheral Interface (SPI) Compatible
•Supports SPI Modes 0 (0,0) and 3 (1,1)
•Low Voltage and Standard Voltage Operation
–5.0 (V CC = 4.5V to 5.5V)
–2.7 (V CC = 2.7V to 5.5V)
–1.8 (V CC = 1.8V to 3.6V)
•2.1 MHz Clock Rate
•32-Byte Page Mode
•Block Write Protection
–Protect 1/4, 1/2, or Entire Array
•Write Protect (WP) Pin and Write Disable Instructions for Both Hardware and Software Data Protection
•Self-Timed Write Cycle (5 ms Typical)
•High Reliability
–Endurance: 1 Million Write Cycles
–Data Retention: 100 Years
–ESD Protection: >4000V
•Automotive Grade and Extended Temperature Devices Available
•8-Pin PDIP, JEDEC SOIC, and 14-Pin and 20-Pin TSSOP Packages
Description
The AT25080/160/320/640 provides 8192/16384/32768/65536 bits of serial electrically erasable programmable read only memory (EEPROM) organized as 1024/2048/4096/8192 words of 8 bits each. The device is optimized for use in many industrial and commercial applications where low power and low voltage operation
(continued)
Pin Configuration
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Pin Name |
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Chip Select |
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CS |
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SCK |
Serial Data Clock |
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SI |
Serial Data Input |
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SO |
Serial Data Output |
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GND |
Ground |
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VCC |
Power Supply |
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Write Protect |
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WP |
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Suspends Serial Input |
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HOLD |
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NC |
No Connect |
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DC |
Don’t Connect |
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8-Pin PDIP |
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8-Pin SOIC |
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1 |
8 |
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VCC |
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1 |
8 |
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VCC |
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CS |
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CS |
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SO |
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2 |
7 |
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SO |
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2 |
7 |
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HOLD |
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HOLD |
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WP |
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3 |
6 |
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SCK |
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WP |
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3 |
6 |
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SCK |
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GND |
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4 |
5 |
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SI |
GND |
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4 |
5 |
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SI |
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14-Lead TSSOP |
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20-Lead TSSOP* |
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1 |
14 |
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VCC |
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NC |
1 |
20 |
NC |
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CS |
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SO |
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2 |
13 |
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2 |
19 |
VCC |
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HOLD |
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CS |
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NC |
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3 |
12 |
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NC |
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SO |
3 |
18 |
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HOLD |
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NC |
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4 |
11 |
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NC |
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SO |
4 |
17 |
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HOLD |
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NC |
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5 |
10 |
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NC |
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NC |
5 |
16 |
NC |
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6 |
9 |
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SCK |
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NC |
6 |
15 |
NC |
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WP |
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GND |
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7 |
8 |
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SI |
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7 |
14 |
SCK |
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WP |
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GND |
8 |
13 |
SI |
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DC |
9 |
12 |
DC |
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NC |
10 |
11 |
NC |
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*Pins 3, 4 and 17, 18 are internally connected for 14-lead TSSOP socket compatibility.
SPI Serial |
EEPROMs |
8K (1024 x 8) |
16K (2048 x 8) |
32K (4096 x 8) |
64K (8192 x 8) |
AT25080 |
AT25160 |
AT25320 |
AT25640 |
Rev. 0675C–08/98 |
1 |
are essential. The AT25080/160/320/640 is available in space saving 8-pin PDIP, JEDEC SOIC, and 14-pin and 20-pin TSSOP packages.
The AT25080/160/320/640 is enabled through the Chip Select pin (CS) and accessed via a 3-wire interface consisting of Serial Data Input (SI), Serial Data Output (SO), and Serial Clock (SCK). All programming cycles are completely self-timed, and no separate ERASE cycle is required before WRITE.
Absolute Maximum Ratings*
..................................Operating Temperature |
-55°C to +125°C |
Storage Temperature ..................................... |
-65°C to +150°C |
Voltage on Any Pin |
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with Respect to Ground ..................................... |
-1.0V to +7.0V |
Maximum Operating Voltage........................................... |
6.25V |
DC Output Current........................................................ |
5.0 mA |
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Block Diagram
BLOCK WRITE protection is enabled by programming the status register with one of four blocks of write protection. Separate program enable and program disable instructions are provided for additional data protection. Hardware data protection is provided via the WP pin to protect against inadvertent write attempts to the status register. The HOLD pin may be used to suspend any serial communication without resetting the serial sequence.
*NOTICE: Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
2 AT25080/160/320/640
AT25080/160/320/640
Pin Capacitance(1)
Applicable over recommended operating range from TA = 25°C, f = 1.0 MHz, VCC = +5.0V (unless otherwise noted).
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Test Conditions |
Max |
Units |
Conditions |
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COUT |
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Output Capacitance (SO) |
8 |
pF |
VOUT = 0V |
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CIN |
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Input Capacitance(CS, |
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SCK, SI, |
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6 |
pF |
VIN = 0V |
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WP, |
HOLD) |
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Note: |
1. This parameter is characterized and is not 100% tested. |
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DC Characteristics
Applicable over recommended operating range from: TAI = -40°C to +85°C, VCC = +1.8V to +5.5V, TAC = 0°C to +70°C, VCC = +1.8V to +5.5V (unless otherwise noted).
Symbol |
Parameter |
Test Condition |
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Min |
Typ |
Max |
Units |
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VCC1 |
Supply Voltage |
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1.8 |
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3.6 |
V |
VCC2 |
Supply Voltage |
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2.7 |
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5.5 |
V |
VCC3 |
Supply Voltage |
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4.5 |
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5.5 |
V |
ICC1 |
Supply Current |
VCC = 5.0V at 1 MHz, SO = Open |
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3.0 |
mA |
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ICC2 |
Supply Current |
VCC = 5.0V at 2 MHz, SO = Open |
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5.0 |
mA |
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ISB1 |
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VCC = 1.8V, |
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= VCC |
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μA |
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Standby Current |
CS |
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0.1 |
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ISB2 |
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VCC = 2.7V, |
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= VCC |
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μA |
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Standby Current |
CS |
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0.2 |
0.5 |
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ISB3 |
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VCC = 5.0V, |
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= VCC |
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μA |
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Standby Current |
CS |
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0.5 |
2.0 |
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IIL |
Input Leakage |
VIN = 0V to VCC |
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-3.0 |
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3.0 |
μA |
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IOL |
Output Leakage |
VIN = 0V to VCC, TAC = 0°C to 70°C |
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-3.0 |
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3.0 |
μA |
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VIL(1) |
Input Low Voltage |
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-0.6 |
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VCC x 0.3 |
V |
VIH(1) |
Input High Voltage |
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VCC x 0.7 |
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VCC + 0.5 |
V |
VOL1 |
Output Low Voltage |
4.5V ≤ VCC ≤ 5.5V |
IOL = 3.0 mA |
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0.4 |
V |
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VOH1 |
Output High Voltage |
IOH = -1.6 mA |
VCC - 0.8 |
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V |
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VOL2 |
Output Low Voltage |
1.8V ≤ VCC ≤ 3.6V |
IOL = 0.15 mA |
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0.2 |
V |
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VOH2 |
Output High Voltage |
IOH = -100 |
μA |
VCC - 0.2 |
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V |
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Note: 1. |
VIL min and VIH max are reference only and are not tested. |
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3
AC Characteristics
Applicable over recommended operating range from TA = -40°C to +85°C, VCC = As Specified, CL = 1 TTL Gate and 100 pF (unless otherwise noted).
Symbol |
Parameter |
Voltage |
Min |
Max |
Units |
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fSCK |
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4.5 - 5.5 |
0 |
2.1 |
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SCK Clock Frequency |
2.7 - 5.5 |
0 |
2.1 |
MHz |
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1.8 - 3.6 |
0 |
0.5 |
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tRI |
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4.5 - 5.5 |
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2 |
μs |
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Input Rise Time |
2.7 - 5.5 |
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2 |
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1.8 - 3.6 |
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tFI |
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4.5 - 5.5 |
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2 |
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Input Fall Time |
2.7 - 5.5 |
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2 |
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1.8 - 3.6 |
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2 |
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tWH |
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4.5 - 5.5 |
200 |
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SCK High Time |
2.7 - 5.5 |
200 |
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1.8 - 3.6 |
800 |
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tWL |
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4.5 - 5.5 |
200 |
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SCK Low Time |
2.7 - 5.5 |
200 |
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1.8 - 3.6 |
800 |
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tCS |
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4.5 - 5.5 |
250 |
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CS |
High Time |
2.7 - 5.5 |
250 |
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1.8 - 3.6 |
1000 |
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tCSS |
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4.5 - 5.5 |
250 |
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CS |
Setup Time |
2.7 - 5.5 |
250 |
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1.8 - 3.6 |
1000 |
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tCSH |
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4.5 - 5.5 |
250 |
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CS |
Hold Time |
2.7 - 5.5 |
250 |
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1.8 - 3.6 |
1000 |
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tSU |
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4.5 - 5.5 |
50 |
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Data In Setup Time |
2.7 - 5.5 |
50 |
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1.8 - 3.6 |
100 |
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tH |
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4.5 - 5.5 |
50 |
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Data In Hold Time |
2.7 - 5.5 |
50 |
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1.8 - 3.6 |
100 |
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tHD |
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4.5 - 5.5 |
100 |
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Hold |
Setup Time |
2.7 - 5.5 |
100 |
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1.8 - 3.6 |
400 |
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tCD |
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4.5 - 5.5 |
200 |
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Hold |
Hold Time |
2.7 - 5.5 |
200 |
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1.8 - 3.6 |
400 |
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tV |
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4.5 - 5.5 |
0 |
200 |
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Output Valid |
2.7 - 5.5 |
0 |
200 |
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1.8 - 3.6 |
0 |
800 |
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tHO |
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4.5 - 5.5 |
0 |
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Output Hold Time |
2.7 - 5.5 |
0 |
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1.8 - 3.6 |
0 |
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4 AT25080/160/320/640
AT25080/160/320/640
AC Characteristics (Continued)
Applicable over recommended operating range from TA = -40°C to +85°C, VCC = As Specified, CL = 1 TTL Gate and 100 pF (unless otherwise noted).
Symbol |
Parameter |
Voltage |
Min |
Max |
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tLZ |
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4.5 - 5.5 |
0 |
100 |
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Hold |
to Output Low Z |
2.7 - 5.5 |
0 |
100 |
ns |
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1.8 - 3.6 |
0 |
100 |
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4.5 - 5.5 |
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100 |
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tHZ |
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Hold |
to Output High Z |
2.7 - 5.5 |
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100 |
ns |
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1.8 - 3.6 |
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100 |
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4.5 - 5.5 |
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250 |
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tDIS |
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Output Disable Time |
2.7 - 5.5 |
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250 |
ns |
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1.8 - 3.6 |
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1000 |
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4.5 - 5.5 |
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5 |
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tWC |
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Write Cycle Time |
2.7 - 5.5 |
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10 |
ms |
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1.8 - 3.6 |
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20 |
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Endurance(1) |
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5.0V, 25°C, Page Mode |
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1M |
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Write Cycles |
Note: 1. This parameter is characterized and is not 100% tested.
5