ATMEL AT93C46B-10SI-2.7, AT93C46B-10SI-2.5, AT93C46B-10SI, AT93C46B-10SC-2.7, AT93C46B-10SC-2.5 Datasheet
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Features
• x16 Organization Utilizing “No Connects” for Pins 6 and 7
• Low Voltage and Standard Voltage Operation
– 5.0 (VCC = 4.5V to 5.5V)
– 2.7 (VCC = 2.7V to 5.5V)
– 2.5 (VCC = 2.5V to 5.5V)
• 3-Wire Serial Interface
• 2 MHz Clock Rate (5V) Compatibility
• Self-Timed Write Cycle (10 ms max)
• High Reliability
– Endurance: 1 Million Cycles
– Data Retention: 100 Years
• Automotive Grade and Extended Temperature Devices Available
• 8-Pin PDIP and JEDEC SOIC Packages
Description
The AT93C46B provides 1024 bits of serial electrically erasable programmable read
only memory (EEPROM) organized as 64 words of 16 bits each. The device is optimized for use in many industrial and commercial applications where low power and
low voltage operatio n ar e essential. The AT93C46B is avai la ble in sp ac e sa vi ng 8- pi n
PDIP and 8-pin JEDEC packages.
The AT93C46B is enabled through the Chip S elect pin (CS) , and accessed vi a a 3wire serial interface consisting of Data Input (DI), Data Output (DO), and Shift Clock
(SK). Upon receiving a READ instruction at DI, the address is decoded and the data is
clocked out serially on the data output pin DO. The WRITE cycle is compl etely selftimed and no separate ERASE cycle is required before WRITE. The WRITE cycle is
only enabled when the part is in the ERASE/WRITE ENABLE state. When CS is
brought “high” fol lowing the in itiation of a WRITE cycle, the DO pin o utputs the
READY/BUSY status of the part.
The AT93C46B is available in 4.5V to 5.5V, 2.7V to 5.5V, and 2.5V to 5.5V versions.
AT93C46B
3-Wire
Serial
2
E
PROMs
1K (64 x 16)
AT93C46B
Pin Configuration
Pin Name Function
CS Chip Select
SK Serial Data Clock
DI Serial Data Input
DO Serial Data Output
GND Ground
V
CC
NC No Connect
Power Supply
CS
SK
DI
DO
CS
SK
DI
SO
8-Pin PDIP
1
2
3
4
8-Pin SOIC
1
2
3
4
8
VCC
7
NC
6
NC
5
GND
8
VCC
7
NC
6
NC
5
GND
0917A-A–11/97
1
Absolute Maximum Ratings*
Operating Temperature.........................-55°C to +125°C
Storage Temperature............................-65°C to +150°C
Voltage on Any Pin
with Respect to Ground........................... -1.0V to +7.0V
Maximum Operating Voltage.................................6.25V
DC Output Current ..............................................5.0 mA
Block Diagram
*NOTICE: Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent damage to the dev ice . This is a s tress rating only an d
functional oper ation of the de vice 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 f or e xtended periods ma y af fect de vice
reliability .
2
AT93C46B
AT93C46B
Pin Capacitance
(1)
Applicable over recommended operating range from TA = 25°C, f = 1.0 MHz, VCC = +5.0V (unless otherwise noted).
Test Conditions Max Units Conditions
C
C
Output Capacitance (DO ) 5 pF V
OUT
Input Capacitance (CS, SK, DI) 5 pF VIN = 0V
IN
OUT
= 0V
Note: 1. This parameter is characterized and is not 100% tested.
DC Characteristics
Applicable over recommended operating range from: TAI = -40°C to +85°C, VCC = +2.5V to +5.5V,
= 0°C to +70°C, VCC = +2.5V to +5.5V (unless otherwise noted).
T
AC
Symbol Parameter T est Condition Min T yp Max Units
V
V
V
I
CC2
CC3
CC4
CC
Supply Voltage 2.5 5.5 V
Supply Voltage 2.7 5.5 V
Supply Voltage 4.5 5.5 V
READ at 1.0 MHz 0.5 2.0 mA
Supply Current VCC = 5.0V
WRITE at 1.0 MHz 0.5 2.0 mA
I
SB1
I
SB2
I
SB3
I
IL
I
OL
V
V
V
V
V
V
V
V
IL1
IH1
IL2
IH2
OL1
OH1
OL2
OH2
Standby Current VCC = 2.5V CS = 0V 14.0 20.0
Standby Current VCC = 2.7V CS = 0V 14.0 20.0
Standby Current VCC = 5.0V CS = 0V 35.0 50.0
Input Leakage VIN = 0V to VCC 0.1 1.0
Output Leakage VIN = 0V to VCC 0.1 1.0
(1)
Input Low Voltage
(1)
Input High Voltage
(1)
Input Low Voltage
(1)
Input High Voltage
Output Low Voltage
Output High Voltage
Output Low Voltage
Output High Voltage
4.5V ≤ V
1.8V ≤ V
4.5V ≤ V
1.8V ≤ V
≤ 5.5V
CC
≤ 2.7V
CC
≤ 5.5V
CC
≤ 2.7V
CC
Note: 1. VIL and VIH max are reference only and are not tested.
-0.1
2.0
0.0
x 0.7
V
CC
I
= 2.1 mA 0.4 V
OL
I
= -0.4 mA 2.4 V
OH
I
= 0.15 mA 0.2 V
OL
I
= -100 µAV
OH
- 0.2 V
CC
0.8
+ 1
V
CC
V
x 0.3
CC
+ 1
V
CC
µ
A
µ
A
µ
A
µ
A
µ
A
V
V
3
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