93AA56A/B/C, 93LC56A/B/C,
93C56A/B/C
2K Microwire Compatible Serial EEPROM
Device Selection Table
Part Number
93AA56A
93AA56B
93LC56A
93LC56B
93C56A
93C56B
93AA56C
93LC56C
93C56C
V
CC
Range
1.8-5.5
1.8-5-5
2.5-5.5
2.5-5.5
4.5-5.5
4.5-5.5
1.8-5.5
2.5-5.5
4.5-5.5
ORG Pin
No
No
No
No
No
No
Yes
Yes
Yes
Word Size
8-bit
16-bit
8-bit
16-bit
8-bit
16-bit
8 or 16-bit
8 or 16-bit
8 or 16-bit
Temp Ranges
I
I
I, E
I, E
I, E
I, E
I
I, E
I, E
Packages
P, SN, ST, MS, OT, MC
P, SN, ST, MS, OT, MC
P, SN, ST, MS, OT, MC
P, SN, ST, MS, OT, MC
P, SN, ST, MS, OT, MC
P, SN, ST, MS, OT, MC
P, SN, ST, MS, MC
P, SN, ST, MS, MC
P, SN, ST, MS, MC
Features:
•
•
•
•
•
•
•
•
•
•
•
•
•
Low-power CMOS technology
ORG pin to select word size for ‘56C’ version
256 x 8-bit organization ‘A’ ver. devices (no ORG)
128 x 16-bit organization ‘B’ ver. devices (no
ORG)
Self-timed erase/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 (Ready/Busy)
Sequential read function
1,000,000 E/W cycles
Data retention > 200 years
Temperature ranges supported:
- Industrial (I)
- Automotive (E)
-40°C to +85°C
-40°C to +125°C
Description:
The Microchip Technology Inc. 93XX56A/B/C devices
are 2K bit low-voltage serial Electrically Erasable
PROMs (EEPROM). Word-selectable devices such as
the 93AA56C, 93LC56C or 93C56C are dependent
upon external logic levels driving the ORG pin to set
word size. For dedicated 8-bit communication, the
93XX56A devices are available, while the 93XX56B
devices provide dedicated 16-bit communication.
Advanced CMOS technology makes these devices
ideal for low-power, nonvolatile memory applications.
The entire 93XX Series is available in standard
packages including 8-lead PDIP and SOIC, and
advanced packaging including 8-lead MSOP, 6-lead
SOT-23, 8-lead 2x3 DFN and 8-lead TSSOP. Pb-free
(Pure Matte Sn) finish is available.
Pin Function Table
Name
CS
CLK
DI
DO
V
SS
NC
ORG
V
CC
Chip Select
Serial Data Clock
Serial Data Input
Serial Data Output
Ground
No internal connection
Memory Configuration
Power Supply
Function
©
2005 Microchip Technology Inc.
DS21794C-page 1
93AA56A/B/C, 93LC56A/B/C, 93C56A/B/C
Package Types (not to scale)
ROTATED SOIC
(ex: 93LC46BX)
NC
V
CC
CS
CLK
1
2
3
4
8 ORG*
7 V
SS
6 DO
5 DI
CS
CLK
DI
DO
PDIP/SOIC
(P, SN)
1
2
3
4
8
7
6
5
V
CC
NC
ORG
*
V
SS
TSSOP/MSOP
(ST, MS)
CS
CLK
DI
DO
1
2
3
4
8
7
6
5
V
CC
NC
ORG*
V
SS
DO
V
SS
DI
SOT-23
(OT)
1
2
3
6
5
4
V
CC
CS
CLK
DFN
CS
CLK
DI
DO
1
2
3
4
8
7
6
5
V
CC
NC
ORG*
V
SS
* ORG pin is NC on A/B devices
DS21794C-page 2
©
2005 Microchip Technology Inc.
93AA56A/B/C, 93LC56A/B/C, 93C56A/B/C
1.0
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings
(†)
V
CC
.............................................................................................................................................................................7.0V
All inputs and outputs w.r.t. V
SS
..........................................................................................................-0.6V to V
CC
+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 “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
extended periods may affect device reliability.
TABLE 1-1:
DC CHARACTERISTICS
Industrial (I):
T
A
= -40°C to +85°C, V
CC
= +1.8V to +5.5V
Automotive (E): T
A
= -40°C to +125°C, V
CC
= +2.5V to +5.5V
Min
2.0
0.7 V
CC
-0.3
-0.3
—
—
2.4
V
CC
- 0.2
—
—
—
—
—
—
—
—
—
—
Typ
—
—
—
—
—
—
—
—
—
—
—
—
500
—
—
100
—
—
Max
V
CC
+1
V
CC
+1
0.8
0.2 V
CC
0.4
0.2
—
—
±1
±1
7
2
—
1
500
—
1
5
Units
V
V
V
V
V
V
V
V
μA
μA
pF
mA
μA
mA
μA
μA
μA
μA
Conditions
V
CC
≥
2.7V
V
CC
< 2.7V
V
CC
≥
2.7V
V
CC
< 2.7V
I
OL
= 2.1 mA, V
CC
= 4.5V
I
OL
= 100
μA,
V
CC
= 2.5V
I
OH
= -400
μA,
V
CC
= 4.5V
I
OH
= -100
μA,
V
CC
= 2.5V
V
IN
= V
SS
or V
CC
V
OUT
= V
SS
or V
CC
V
IN
/V
OUT
= 0V
(Note 1)
T
A
= 25°C, F
CLK
= 1 MHz
F
CLK
= 3 MHz, Vcc = 5.5V
F
CLK
= 2 MHz, Vcc = 2.5V
F
CLK
= 3 MHz, V
CC
= 5.5V
F
CLK
= 2 MHz, V
CC
= 3.0V
F
CLK
= 2 MHz, V
CC
= 2.5V
I – Temp
E – Temp
CLK = CS = 0V
ORG = DI = V
SS
or V
CC
(Note 2) (Note 3)
93AA56A/B/C, 93LC56A/B/C
(Note 1)
93C56A/B/C
All parameters apply over the specified
ranges unless otherwise noted.
Param.
Symbol
No.
D1
D2
D3
D4
D5
D6
D7
D8
D9
V
IH
1
V
IH
2
V
IL
1
V
IL
2
Vol1
Vol2
V
OH
1
V
OH
2
I
LI
I
LO
C
IN
,
C
OUT
Parameter
High-level input voltage
Low-level input voltage
Low-level output voltage
High-level output voltage
Input leakage current
Output leakage current
Pin capacitance (all inputs/
outputs)
I
CC
write Write current
I
CC
read Read current
D10
I
CCS
Standby current
D11
V
POR
V
CC
voltage detect
—
—
1.5
3.8
—
—
V
V
Note 1:
2:
3:
This parameter is periodically sampled and not 100% tested.
ORG pin not available on ‘A’ or ‘B’ versions.
Ready/Busy status must be cleared from DO, see
Section 3.4 "Data Out (DO)".
©
2005 Microchip Technology Inc.
DS21794C-page 3
93AA56A/B/C, 93LC56A/B/C, 93C56A/B/C
TABLE 1-2:
AC CHARACTERISTICS
Industrial (I):
T
A
= -40°C to +85°C, V
CC
= +1.8V
TO
+5.5V
Automotive (E): T
A
= -40°C to +125°C, V
CC
= +2.5V
TO
+5.5V
Min
—
Max
3
2
1
—
Units
MHz
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ms
ms
ms
ms
Conditions
4.5V
≤
V
CC
< 5.5V, 93XX56C only
2.5V
≤
V
CC
< 5.5V
1.8V
≤
V
CC
< 2.5V
4.5V
≤
V
CC
< 5.5V, 93XX56C only
2.5V
≤
V
CC
< 5.5V
1.8V
≤
V
CC
< 2.5V
4.5V
≤
V
CC
< 5.5V, 93XX56C only
2.5V
≤
V
CC
< 5.5V
1.8V
≤
V
CC
< 2.5V
4.5V
≤
V
CC
< 5.5V
2.5V
≤
V
CC
< 4.5V
1.8V
≤
V
CC
< 2.5V
1.8V
≤
V
CC
< 5.5V
1.8V
≤
V
CC
< 5.5V
4.5V
≤
V
CC
< 5.5V, 93XX56C only
2.5V
≤
V
CC
< 5.5V
1.8V
≤
V
CC
< 2.5V
4.5V
≤
V
CC
< 5.5V, 93XX56C only
2.5V
≤
V
CC
< 5.5V
1.8V
≤
V
CC
< 2.5V
4.5V
≤
V
CC
< 5.5V, CL = 100 pF
2.5V
≤
V
CC
< 4.5V, CL = 100 pF
1.8V
≤
V
CC
< 2.5V, CL = 100 pF
4.5V
≤
V
CC
< 5.5V,
(Note 1)
1.8V
≤
V
CC
< 4.5V,
(Note 1)
4.5V
≤
V
CC
< 5.5V, CL = 100 pF
2.5V
≤
V
CC
< 4.5V, CL = 100 pF
1.8V
≤
V
CC
< 2.5V, CL = 100 pF
Erase/Write mode (AA and LC
versions)
Erase/Write mode
(93C versions)
ERAL mode, 4.5V
≤
V
CC
≤
5.5V
WRAL mode, 4.5V
≤
V
CC
≤
5.5V
All parameters apply over the specified
ranges unless otherwise noted.
Param.
Symbol
No.
A1
F
CLK
Parameter
Clock frequency
A2
T
CKH
Clock high time
200
250
450
100
200
450
50
100
250
0
250
50
100
250
50
100
250
—
A3
T
CKL
Clock low time
—
A4
T
CSS
Chip Select setup time
—
A5
A6
A7
T
CSH
T
CSL
T
DIS
Chip Select hold time
Chip Select low time
Data input setup time
—
—
—
A8
T
DIH
Data input hold time
—
A9
T
PD
Data output delay time
200
250
400
100
200
200
300
500
6
2
6
15
—
A10
A11
T
CZ
T
SV
Data output disable time
Status valid time
—
—
A12
A13
A14
A15
A16
Note 1:
2:
T
WC
T
WC
T
EC
T
WL
—
Program cycle time
—
—
—
—
Endurance
1M
cycles 25°C, V
CC
= 5.0V,
(Note 2)
This parameter is periodically sampled and not 100% tested.
This application is not tested but ensured by characterization. For endurance estimates in a specific
application, please consult the Total Endurance™ Model which may be obtained from Microchip’s web site
at www.microchip.com.
DS21794C-page 4
©
2005 Microchip Technology Inc.
93AA56A/B/C, 93LC56A/B/C, 93C56A/B/C
FIGURE 1-1:
CS
V
IH
V
IL
V
IH
CLK
V
IL
T
DIS
V
IH
DI
V
IL
T
PD
DO
(Read)
DO
(Program)
V
OH
V
OL
V
OH
Status Valid
V
OL
T
SV
is relative to CS.
T
CZ
T
SV
T
PD
T
CZ
T
DIH
T
CSS
T
CKH
T
CKL
T
CSH
SYNCHRONOUS DATA TIMING
Note:
TABLE 1-3: INSTRUCTION SET FOR X 16 ORGANIZATION (93XX56B OR 93XX56C WITH ORG =
1)
Instruction
ERASE
ERAL
EWDS
EWEN
READ
WRITE
WRAL
SB
1
1
1
1
1
1
1
Opcode
11
00
00
00
10
01
00
X
1
0
1
X
X
0
Address
A6 A5 A4 A3 A2 A1 A0
0
0
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Data In
—
—
—
—
—
D15 – D0
D15 – D0
Data Out
(RDY/BSY)
(RDY/BSY)
High-Z
High-Z
D15 – D0
(RDY/BSY)
(RDY/BSY)
Req. CLK Cycles
11
11
11
11
27
27
27
A6 A5 A4 A3 A2 A1 A0
A6 A5 A4 A3 A2 A1 A0
1
X
X
X
X
X
X
TABLE 1-4: INSTRUCTION SET FOR X 8 ORGANIZATION (93XX56A OR 93XX56C WITH ORG =
0)
Instruction
ERASE
ERAL
EWDS
EWEN
READ
WRITE
WRAL
SB
1
1
1
1
1
1
1
Opcode
11
00
00
00
10
01
00
Address
X A7 A6 A5 A4 A3 A2 A1 A0
1
0
1
0
0
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Data In
—
—
—
—
—
D7 – D0
D7 – D0
Data Out
(RDY/BSY)
(RDY/BSY)
High-Z
High-Z
D7 – D0
(RDY/BSY)
(RDY/BSY)
Req. CLK
Cycles
12
12
12
12
20
20
20
X A7 A6 A5 A4 A3 A2 A1 A0
X A7 A6 A5 A4 A3 A2 A1 A0
0
1
X
X
X
X
X
X
X
©
2005 Microchip Technology Inc.
DS21794C-page 5
