93LC56A Datasheet | Microchip Technology





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93LC56A Datasheet PDF

Part Number 93LC56A
Description 2K 2.5V Microwave Serial EEPROM
Manufacture Microchip Technology
Total Page 12 Pages
PDF Download Download 93LC56A Datasheet

Features: Datasheet pdf M FEATURES 93LC56A/B BLOCK DIAGRAM 2K 2.5V Microwire® Serial EEPROM • Sin gle supply with operation down to 2.5V • Low power CMOS technology - 1 mA ac tive current (typical) - 1 µA standby current (maximum) • 256 x 8 bit organ ization (93LC56A) • 128 x 16 bit orga nization (93LC56B) • Self-timed ERASE and WRITE cycles (including auto-erase ) • Automatic ERAL before WRAL • Po wer on/off data protection circuitry Industry standard 3-wire serial inter face • Device status signal during ER ASE/WRITE cycles • Sequential READ fu nction • 1,000,000 E/W cycles guarant eed • Data retention > 200 years • 8-pin PDIP/SOIC and 8-pin TSSOP package s • Available for the following tempe rature ranges: - Commercial (C): 0°C t o +70°C - Industrial (I): -40°C to +8 5°C MEMORY ARRAY ADDRESS DECODER AD DRESS COUNTER DATA REGISTER DI MODE DEC ODE LOGIC CLOCK GENERATOR Vcc Vss OUTPU T BUFFER DO CS CLK DESCRIPTION The M icrochip Technology Inc. 93LC56A/B are 2K-bit, low-voltage serial Electrically Erasable PROMs. Th.

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93LC56A Datasheet
M
93LC56A/B
2K 2.5V Microwire® Serial EEPROM
FEATURES
• Single supply with operation down to 2.5V
• Low power CMOS technology
- 1 mA active current (typical)
- 1 µA standby current (maximum)
• 256 x 8 bit organization (93LC56A)
• 128 x 16 bit organization (93LC56B)
• Self-timed ERASE and WRITE cycles
(including auto-erase)
• Automatic ERAL before WRAL
• Power on/off data protection circuitry
• Industry standard 3-wire serial interface
• Device status signal during ERASE/WRITE cycles
• Sequential READ function
• 1,000,000 E/W cycles guaranteed
• Data retention > 200 years
• 8-pin PDIP/SOIC and 8-pin TSSOP packages
• Available for the following temperature ranges:
- Commercial (C):
- Industrial (I):
0°C to +70°C
-40°C to +85°C
PACKAGE TYPE
DIP
SOIC
BLOCK DIAGRAM
MEMORY
ARRAY
ADDRESS
DECODER
DI
CS
CLK
DATA
REGISTER
ADDRESS
COUNTER
OUTPUT
BUFFER
DO
MODE
DECODE
LOGIC
CLOCK
GENERATOR
Vcc
Vss
DESCRIPTION
The Microchip Technology Inc. 93LC56A/B are 2K-bit,
low-voltage serial Electrically Erasable PROMs. The
device memory is configured as x8 (93LC56A) or
x16 bits (93LC56B). Advanced CMOS technology
makes these devices ideal for low power nonvolatile
memory applications. The 93LC56A/B is available in
standard 8-pin DIP, surface mount SOIC, and TSSOP
packages. The 93LC56AX/BX are only offered in a
150-mil SOIC package.
SOIC
TSSOP
CS 1
CLK 2
DI 3
DO 4
8 Vcc
CS
7 NC
CLK
6 NC
DI
5 Vss
DO
1
2
3
4
8 VCC
NU 1
7 NC
Vcc 2
6 NC
CS 3
5 Vss CLK 4
CS 1
8 NC CLK 2
DI 3
7 Vss
DO 4
6 DO
5 DI
8 Vcc
7 NC
6 NC
5 Vss
Microwire is a registered trademark of National Semiconductor.
© 1997 Microchip Technology Inc.
Preliminary
DS21208A-page 1

93LC56A Datasheet
93LC56A/B
1.0 ELECTRICAL
CHARACTERISTICS
1.1 Maximum Ratings*
VCC...................................................................................7.0V
All inputs and outputs w.r.t. Vss ................ -0.6V to Vcc +1.0V
Storage temperature .....................................-65°C to +150°C
Ambient temp. with power applied.................-65°C to +125°C
Soldering temperature of leads (10 seconds) ............. +300°C
ESD protection on all pins................................................4 kV
*Notice: Stresses above those listed under “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 extended peri-
ods may affect device reliability.
TABLE 1-1 PIN FUNCTION TABLE
Name
Function
CS Chip Select
CLK Serial Data Clock
DI Serial Data Input
DO Serial Data Output
VSS Ground
NC No Connect
VCC Power Supply
TABLE 1-2 DC AND AC ELECTRICAL CHARACTERISTICS
All parameters apply over the specified Commercial (C): VCC = +2.5V to +6.0V
operating ranges unless otherwise
Industrial (I):
VCC = +2.5V to +6.0V
noted
Tamb = 0°C to +70°C
Tamb = -40°C to +85°C
Parameter
Symbol
Min.
Max.
Units
Conditions
High level input voltage
VIH1
VIH2
2.0
0.7 Vcc
Vcc +1
Vcc +1
V 2.7V VCC 5.5V (Note 2)
V VCC < 2.7V
Low level input voltage
VIL1
-0.3
0.8
V VCC > 2.7V (Note 2)
VIL2 -0.3 0.2 Vcc V VCC < 2.7V
Low level output voltage
VOL1
0.4
V IOL = 2.1 mA; Vcc = 4.5V
VOL2
0.2
V IOL =100 µA; Vcc = Vcc Min.
High level output voltage
VOH1
VOH2
2.4
Vcc-0.2
V IOH = -400 µA; Vcc = 4.5V
V IOH = -100 µA; Vcc = Vcc Min.
Input leakage current
ILI -10 10 µA VIN = VSS
Output leakage current
ILO -10 10 µA VOUT = VSS
Pin capacitance
(all inputs/outputs)
CIN, COUT
7
pF
VIN/VOUT = 0 V (Notes 1 & 2)
Tamb = +25°C, Fclk = 1 MHz
Operating current
ICC read
ICC write
1 mA FCLK = 2 MHz; VCC = 6.0V
500 µA FCLK = 1 MHz; VCC = 3.0V
1.5 mA
Standby current
ICCS
1
µA CS = VSS
Clock frequency
FCLK
2
MHz
VCC > 4.5V
1
MHz
VCC < 4.5V
Clock high time
TCKH
250
ns
Clock low time
TCKL
250
ns
Chip select setup time
TCSS
50
ns Relative to CLK
Chip select hold time
TCSH
0
— ns Relative to CLK
Chip select low time
TCSL
250
ns
Data input setup time
TDIS
100
ns Relative to CLK
Data input hold time
TDIH
100
ns Relative to CLK
Data output delay time
TPD — 400 ns Cl = 100 pF
Data output disable time
TCZ — 100 ns Cl = 100 pF (Note 2)
Status valid time
TSV — 500 ns Cl = 100 pF
TWC
6 ms ERASE/WRITE mode
Program cycle time
TEC
6 ms ERAL mode
TWL
15 ms WRAL mode
Endurance
— 1M — cycles 25°C, VCC = 5.0V, Block Mode (Note 3)
Note 1:
2:
3:
This parameter is tested at Tamb = 25°C and FCLK = 1 MHz.
This parameter is periodically sampled and not 100% tested.
This application is not tested but guaranteed by characterization. For endurance estimates in a specific application, please consult the Total
Endurance Model which may be obtained on Microchip’s BBS or website.
DS21208A-page 2
Preliminary
© 1997 Microchip Technology Inc.




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