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Microchip Technology
Microchip Technology

93LC46 Datasheet

1K/2K/4K 2.0V Microwire Serial EEPROM


93LC46 Datasheet Preview


Not recommended for new designs –
Please use 93LC46C, 93LC56C or 93LC66C.
93LC46/56/66
1K/2K/4K 2.5V Microwire Serial EEPROM
Features:
• Single supply with programming operation down
to 2.5V
• Low-power CMOS technology
• 100 µA typical active read current at 2.5V
• 3 µA typical standby current at 2.5V
• ORG pin selectable memory configuration
• 128 x 8- or 64 x 16-bit organization (93LC46)
• 256 x 8- or 128 x 16-bit organization (93LC56)
• 512 x 8 or 256 x 16 bit organization (93LC66)
• Self-timed erase and write cycles
(including auto-erase)
• Automatic ERAL before WRAL
• Power on/off data protection circuitry
• Industry standard 3-wire serial I/O
• Device status signal during erase/write cycles
• Sequential read function
• 1,000,000 E/W cycles ensured
• Data retention > 200 years
• 8-pin PDIP/SOIC
(SOIC in JEDEC standards)
• Temperature ranges supported:
- Industrial (I):
-40°C to +85°C
Description:
The Microchip Technology Inc. 93LC46/56/66 are 1K,
2K and 4K low voltage serial Electrically Erasable
PROMs (EEPROM). The device memory is configured
as x8 or x16 bits depending on the external logic of
levels of the ORG pin. Advanced CMOS technology
makes these devices ideal for low power nonvolatile
memory applications. The 93LC Series is available in
standard 8-pin PDIP and surface mount SOIC
packages. The rotated pin-out 93LC46X/56X/66X are
offered in the “SN” package only.
Package Types
PDIP/SOIC
CS 1
CLK 2
DI 3
DO 4
ROTATED SOIC
NU
VCC
CS
CLK
1
2
3
4
8 VCC
7 NU
6 ORG
5 VSS
8 ORG
7 VSS
6 DO
5 DI
Block Diagram
VCC VSS
Memory
Array
DI
ORG
CS
CLK
Data Register
Mode
Decode
Logic
Clock
Register
Address
Decoder
Address
Counter
Output
Buffer
DO
2004 Microchip Technology Inc.
DS21712B-page 1
Page 1

93LC46/56/66
1.0 ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings(†)
VCC.............................................................................................................................................................................6.5V
All inputs and outputs w.r.t. VSS ........................................................................................................ -0.6V to VCC + 1.0V
Storage temperature ...............................................................................................................................-65°C to +150°C
Ambient temperature with power applied ................................................................................................-40°C to +125°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 periods
may affect device reliability.
DC CHARACTERISTICS
DC CHARACTERISTICS
VCC = +2.5V to +5.5V
Industrial (I): TA = -40°C to +85°C
Param.
No.
Sym
Characteristic
Min Typ Max
D1 VIH1 High-level input voltage 2.0
— VCC +1
VIH2
0.7 VCC — VCC +1
D2 VIL1
Low-level input voltage
-0.3
0.8
VIL2
-0.3 — 0.2 VCC
D3 VOL1 Low-level output voltage —
— 0.4
VOL2
— — 0.3
D4 VOH1 High-level output voltage 2.4 — —
VOH2
VCC -0.2 —
D5 ILI
Input leakage current
— — ±10
D6 ILO
Output leakage current
— ±10
D7 CIN,
Pin capacitance
COUT (all inputs/outputs)
—— 7
D8 ICC write Operating current
—— 3
D9 ICC read
D10 ICCS
Standby current
—— 1
— — 500
— 100 —
— — 100
— — 30
—3—
Note 1: This parameter is tested at TA = 25°C and FCLK = 1 MHz.
2: This parameter is periodically sampled and not 100% tested.
Units
Conditions
V VCC 2.7V
V VCC 2.7V
V VCC 2.7V
V VCC 2.7V
V IOL = 2.1 mA, VCC = 4.5V
V IOL = 100 µA, VCC = 2.5V
V IOL = 400 µA, VCC = 4.5V
V IOL = 100 µA, VCC = 2.5V
µA VIN = 0.1V to VCC
µA VOUT = 0.1V to VCC
pF VIN/VOUT = 0V (Note 1 & 2)
TA = 25°C, FCLK = 1 MHz
mA FCLK = 2 MHz, VCC = 5.5V
(Note 2)
mA FCLK = 2 MHz, VCC = 5.5V
µA FCLK = 1 MHz, VCC = 3.0V
µA FCLK = 1 MHz, VCC = 2.5V
µA CLK = CS = 0V; VCC = 5.5V
µA CLK = CS = 0V; VCC = 3.0V
µA CLK = CS = 0V; VCC = 2.5V
ORG, DI = VSS or VCC
DS21712B-page 2
2004 Microchip Technology Inc.
Page 2

93LC46/56/66
AC CHARACTERISTICS
AC CHARACTERISTICS
VCC = +2.5V to +5.5V
Industrial (I): TA = -40°C to +85°C
Param.
No.
Sym
Characteristic
Min Typ Max Units
Conditions
1
FCLK
Clock frequency
2
TCKH
Clock high time
— — 2 MHz VCC 4.5V
— — 1 MHz VCC < 4.5V
250 — — ns
3
TCKL
Clock low time
250 — — ns
4
TCSS
Chip select setup time
50
— — ns Relative to CLK
5
TCSH
Chip select hold time
0 — — ns Relative to CLK
6
TCSL
Chip select low time
250 — — ns
7
TDIS
Data input setup time
100 — — ns Relative to CLK
8
TDIH
Data input hold time
100 — — ns Relative to CLK
9 TPD Data output delay time — — 400 ns CL = 100 pF
10 TCZ
Data output disable time
— 100 ns CL = 100 pf (Note 2)
11 TSV
Status valid time
— — 500 ns CL = 100 pF
12 TWC Program cycle time
— 4 10 ms Erase/Write mode
13 TEC
— 8 15 ms ERAL mode (VCC=5V ±10%)
14 TWL
15 —
Endurance
— 16 30 ms WRAL mode (VCC=5V ±10%)
1M — 1M cycles 25°C, VCC = 5.0V, Block
mode (Note 3)
Note 1:
2:
3:
This parameter is tested at TA = 25°C and FCLK = 1 MHz.
This parameter is periodically sampled and not 100% tested.
This parameter is not tested but ensured by characterization. For endurance estimates in a specific
application, please consult the Total EnduranceModel which can be obtained from Microchip’s web site
at: www.microchip.com.
FIGURE 1-1:
SYNCHRONOUS DATA TIMING
CS VIH
VIL
VIH
CLK
VIL
VIH
DI
VIL
DO VOH
(Read) VOL
DO VOH
(Write)
VOL
42
78
9
11
3
9
Status Valid
5
10
10
2004 Microchip Technology Inc.
DS21712B-page 3
Page 3
Part Number 93LC46
Manufactur Microchip Technology
Description 1K/2K/4K 2.0V Microwire Serial EEPROM
Total Page 20 Pages
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Related Datasheet

93LC46 , 93LC46 , 93LC46-IP , 93LC46-ISL , 93LC46-ISM , 93LC46-ISN , 93LC46-P , 93LC46-SL , 93LC46-SM , 93LC46-SN , 93LC46A , 93LC46A , 93LC46A-IP , 93LC46A-IP , 93LC46A-ISM , 93LC46A-ISM , 93LC46A-ISN , 93LC46A-ISN , 93LC46A-IST , 93LC46A-IST , 93LC46A-P , 93LC46A-P , 93LC46A-SM , 93LC46A-SM , 93LC46A-SN , 93LC46A-SN , 93LC46A-ST , 93LC46A-ST , 93LC46AB , 93LC46B , 93LC46B , 93LC46B-IP , 93LC46B-IP , 93LC46B-ISM , 93LC46B-ISM , 93LC46B-ISN , 93LC46B-ISN , 93LC46B-IST , 93LC46B-IST , 93LC46B-P , 93LC46B-P , 93LC46B-SM , 93LC46B-SM , 93LC46B-SN , 93LC46B-SN , 93LC46B-ST , 93LC46B-ST ,

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