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  Microchip Technology Semiconductor Electronic Components Datasheet  

25A512 Datasheet

512 Kbit SPI Bus Serial EEPROM

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25A512 pdf
25A512
512 Kbit SPI Bus Serial EEPROM
Device Selection Table
Part Number
25A512
VCC Range
1.7-3.0V
Page Size
128 Byte
Temp. Ranges
I
Packages
SN, ST
Features:
• 10 MHz max. Clock Speed
• Byte and Page-level Write Operations
- 128-byte page
- 5 ms max.
- No page or sector erase required
• Low-Power CMOS Technology
- Max. Write Current: 5 mA at 3.0V, 10 MHz
- Read Current: 10 mA at 3.0V, 10 MHz
- Standby Current: 1A at 2.5V (Deep power-
down)
• Electronic Signature for Device ID
• Self-Timed Erase and Write cycles
- Page Erase (5 ms, typical)
- Sector Erase (10 ms/sector, typical)
- Bulk Erase (10 ms, typical)
• Sector Write Protection (16K byte/sector)
- Protect none, 1/4, 1/2 or all of array
• Built-In Write Protection
- Power-on/off data protection circuitry
- Write enable latch
- Write-protect pin
• High Reliability
- Endurance: 1 Million erase/write cycles
- Data Retention: >200 years
- ESD Protection: 4000V
• Temperature Ranges Supported;
- Industrial (I): -40°C to +85°C
• Pb-free and RoHS Compliant
Pin Function Table
Name
Function
CS
SO
WP
VSS
SI
SCK
HOLD
VCC
Chip Select Input
Serial Data Output
Write-Protect
Ground
Serial Data Input
Serial Clock Input
Hold Input
Supply Voltage
Description:
The Microchip Technology Inc. 25A512 is a 512 Kbit
serial EEPROM memory with byte-level and page-level
serial EEPROM functions. It also features Page, Sector
and Chip erase functions typically associated with
Flash-based products. These functions are not required
for byte or page write operations. The memory is
accessed via a simple Serial Peripheral Interface (SPI)
compatible serial bus. The bus signals required are a
clock input (SCK) plus separate data in (SI) and data
out (SO) lines. Access to the device is controlled by a
Chip Select (CS) input.
Communication to the device can be paused via the
hold pin (HOLD). While the device is paused, transi-
tions on its inputs will be ignored, with the exception of
Chip Select, allowing the host to service higher priority
interrupts.
The 25A512 is available in standard packages includ-
ing 8-lead SOIC and TSSOP packages. All packages
are Pb-free and RoHS compliant.
Package Types (not to scale)
SOIC/TSSOP
(SN, ST)
CS 1
SO 2
WP 3
VSS 4
8 VCC
7 HOLD
6 SCK
5 SI
2010-2011 Microchip Technology Inc.
Preliminary
DS22237C-page 1
Free Datasheet http://www.datasheet4u.com/


  Microchip Technology Semiconductor Electronic Components Datasheet  

25A512 Datasheet

512 Kbit SPI Bus Serial EEPROM

No Preview Available !

25A512 pdf
25A512
1.0 ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings (†)
VCC.............................................................................................................................................................................4.5V
All inputs and outputs w.r.t. VSS ......................................................................................................... -0.3V to VCC +0.3V
Storage temperature .................................................................................................................................-65°C to 150°C
Ambient temperature under bias ...............................................................................................................-40°C to 125°C
ESD protection on all pins ..........................................................................................................................................4 kV
NOTICE: Stresses above 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 those or any other conditions above those
indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for an
extended period of time may affect device reliability.
TABLE 1-1: DC CHARACTERISTICS
DC CHARACTERISTICS
Industrial (I):
TA = -40°C to +85°C
VCC = 1.7V to 3.0V
Param.
No.
Sym.
Characteristic
Min.
Max. Units
Test Conditions
D001 VIH1
D002
D003
D004
D005
D006
VIL1
VIL2
VOL
VOL
VOH
High-level input
voltage
Low-level input
voltage
Low-level output
voltage
High-level output
voltage
.7 VCC
VCC +.3
-0.3
-0.3
VCC -0.2
0.3 VCC
0.2 VCC
0.4
0.2
V
V VCC2.7V
V VCC < 2.7V
V IOL = 2.1 mA, VCC 1.8V
V IOL = 1.0 mA, VCC < 1.8V
V IOH = -400 A
D007 ILI
Input leakage current
±1 A CS = VCC, VIN = VSS TO VCC
D008 ILO
D009 CINT
Output leakage
current
Internal capacitance
(all inputs and
outputs)
±1 A CS = VCC, VOUT = VSS TO VCC
7 pF TA = 25°C, CLK = 1.0 MHz,
VCC = 3.0V (Note)
D010 ICC Read
Operating current
8 mA VCC = 3.0V; FCLK = 10.0 MHz;
SO = Open
5 mA VCC = 2.5V; FCLK = 10.0 MHz;
SO = Open
D011 ICC Write
— 6 mA VCC = 3.0V
— 5 mA VCC = 2.5V
D012 ICCS
Standby current
— 10 A CS = VCC = 3.0V, Inputs tied to VCC or
VSS, 85°C
D13 ICCSPD Deep power-down
current
1 A
Note: This parameter is periodically sampled and not 100% tested.
CS = VCC = 2.5V, Inputs tied to VCC or
VSS, 85°C
DS22237C-page 2
Preliminary
2010-2011 Microchip Technology Inc.
Free Datasheet http://www.datasheet4u.com/


Part Number 25A512
Description 512 Kbit SPI Bus Serial EEPROM
Maker Microchip Technology
Total Page 30 Pages
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