AT93C46D
3-wire Serial EEPROM
1K (128 x 8 or 64 x 16)
DATASHEET
Features
Low-voltage Operation
̶
̶
V
CC
= 1.8V to 5.5V
1K: 128 x 8 or 64 x 16
User-selectable Internal Organization
3-wire Serial Interface
2MHz Clock Rate (5V)
Self-timed Write Cycle (5ms Max)
High Reliability
̶
̶
Endurance: 1,000,000 Write Cycles
Data Retention: 100 Years
8-lead JEDEC SOIC, 8-lead TSSOP, 8-pad UDFN, 8-lead PDIP, and
8-ball VFBGA Packages
Description
The Atmel
®
AT93C46D provides 1,024 bits of Serial Electrically Erasable
Programmable Read-Only Memory (EEPROM) organized as 64 words of 16 bits
each (when the ORG pin is connected to V
CC
) and 128 words of 8 bits each (when
the ORG pin is tied to ground). The device is optimized for use in many industrial
and commercial applications where low-power and low-voltage operations are
essential. The AT93C46D is available in space-saving 8-lead JEDEC SOIC,
8-lead TSSOP, 8-pad UDFN, 8-lead PDIP, and 8-ball VFBGA packages.
The AT93C46D is enabled through the Chip Select pin (CS) and accessed via a
3-wire 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 DO pin. The write cycle is completely
self-timed, 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 following the initiation of a write cycle, the DO pin outputs the
Ready/Busy status of the part.
The AT93C46D operates from 1.8V to 5.5V.
Atmel-5193H-SEEPROM-AT93C46D-Datasheet_012015
1.
Pin Configurations and Pinouts
Table 1-1.
Pin Name
CS
SK
DI
DO
GND
V
CC
ORG
NC
Pin Configurations
Function
Chip Select
Serial Data Clock
Serial Data Input
Serial Data Output
Ground
Power Supply
Internal Organization
No Connect
CS
SK
DI
DO
CS
SK
DI
DO
8-lead SOIC
(Top View)
1
2
3
4
8
7
6
5
8-lead TSSOP
(Top View)
V
CC
NC
ORG
GND
CS
SK
DI
DO
1
2
3
4
8
7
6
5
V
CC
NC
ORG
GND
8-pad UDFN
(Top View)
1
2
3
4
8
7
6
5
8-lead PDIP
(Top View)
V
CC
NC
ORG
GND
CS
SK
DI
DO
1
2
3
4
8
7
6
5
V
CC
NC
ORG
GND
8-ball VFBGA
(Top View)
CS
SK
DI
DO
1
2
3
4
8
7
6
5
V
CC
NC
ORG
GND
Note:
Drawings are not to scale.
2.
Absolute Maximum Ratings*
Operating Temperature . . . . . . . . . . .-55C to +125C
Storage Temperature . . . . . . . . . . . . .-65C to +150C
Voltage on any pin
with respect to ground . . . . . . . . . . . . . -1.0V to +7.0V
Maximum Operating Voltage . . . . . . . . . . . . . . . 6.25V
DC Output Current . . . . . . . . . . . . . . . . . . . . . . .5.0mA
*Notice: Stresses beyond 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 these or any
other conditions beyond those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions for extended periods may affect device
reliability.
2
AT93C46D [DATASHEET]
Atmel-5193H-SEEPROM-AT93C46D-Datasheet_012015
3.
Block Diagram
Figure 3-1.
Block Diagram
V
CC
GND
Memory Array
ORG
128 x 8
or
64 x 16
Address
Decoder
Data
Register
DI
Mode Decode
Logic
Output
Buffer
CS
SK
Clock
Generator
DO
Notes:
1.
2.
When the ORG pin is connected to V
CC
, the x16 organization is selected. When it is connected to ground,
the x8 organization is selected. If the ORG pin is left unconnected and the application does not load the input
beyond the capability of the internal 1M
pull-up resistor, then the x16 organization is selected.
If the x16 organization is the mode of choice and pin 6 (ORG) is left unconnected, Atmel recommends using
AT93C46E device. For more details, see the AT93C46E datasheet.
AT93C46D [DATASHEET]
Atmel-5193H-SEEPROM-AT93C46D-Datasheet_012015
3
4.
4.1
Memory Organization
Pin Capacitance
Table 4-1.
Pin Capacitance
(1)
Applicable over recommended operating range from T
A
= 25C, f = 1.0MHz, V
CC
= 1.8V (unless otherwise noted).
Symbol
C
OUT
C
IN
Note:
1.
Test Conditions
Output Capacitance (DO)
Input Capacitance (CS, SK, DI)
This parameter is characterized, and is not 100% tested.
Max
5
5
Units
pF
pF
Conditions
V
OUT
= 0V
V
IN
= 0V
4.2
DC Characteristics
Table 4-2.
DC Characteristics
Applicable over recommended operating range from T
AI
= -40°C to +85°C, V
CC
= 1.8V to 5.5V (unless otherwise noted).
Symbol
V
CC1
V
CC2
V
CC3
I
CC
I
SB1
I
SB2
I
SB3
I
IL
I
OL
V
IL1(1)
V
IH1(1)
V
IL2(1)
V
IH2(1)
V
OL1
V
OH1
V
OL2
V
OH2
Note:
1.
Parameter
Supply Voltage
Supply Voltage
Supply Voltage
Supply Current
Standby Current
Standby Current
Standby Current
Input Leakage
Output Leakage
Input Low Voltage
Input High Voltage
Input Low Voltage
Input High Voltage
Output Low Voltage
Output High Voltage
Output Low Voltage
Output High Voltage
V
CC
= 5.0V
V
CC
= 1.8V
V
CC
= 2.7V
V
CC
= 5.0V
V
IN
= 0V to V
CC
V
IN
= 0V to V
CC
2.7V
V
CC
5.5V
2.7V
V
CC
5.5V
1.8V
V
CC
2.7V
1.8V
V
CC
2.7V
2.7V
V
CC
5.5V
2.7V
V
CC
5.5V
1.8V
V
CC
2.7V
1.8V
V
CC
2.7V
I
OL
= 2.1mA
I
OH
=
0.4mA
I
OL
= 0.15mA
I
OH
=
100μA
V
CC
0.2
2.4
0.2
0.6
2.0
0.6
V
CC
x 0.7
Read at 1.0MHz
Write at 1.0MHz
CS = 0V
CS = 0V
CS = 0V
Test Condition
Min
1.8
2.7
4.5
0.5
0.5
0.4
6.0
10.0
0.1
0.1
Typ
Max
5.5
5.5
5.5
2.0
2.0
1.0
10.0
15.0
1.0
1.0
0.8
V
CC
+ 1
V
CC
x 0.3
V
CC
+ 1
0.4
Unit
V
V
V
mA
mA
μA
μA
μA
μA
μA
V
V
V
V
V
V
V
V
V
IL
min and V
IH
max are reference only, and are not tested.
4
AT93C46D [DATASHEET]
Atmel-5193H-SEEPROM-AT93C46D-Datasheet_012015
4.3
AC Characteristics
Table 4-3.
AC Characteristics
Applicable over recommended operating range from T
AI
=
40°C
to + 85°C, V
CC
= as specified,
CL = 1 TTL gate and 100pF (unless otherwise noted).
Symbol
f
SK
Parameter
SK Clock Frequency
Test Condition
4.5V
V
CC
5.5V
2.7V
V
CC
5.5V
1.8V
V
CC
5.5V
4.5V
V
CC
5.5V
t
SKH
SK High Time
2.7V
V
CC
5.5V
1.8V
V
CC
5.5V
4.5V
V
CC
5.5V
t
SKL
SK Low Time
2.7V
V
CC
5.5V
1.8V
V
CC
5.5V
4.5V
V
CC
5.5V
t
CS
Minimum CS Low Time
2.7V
V
CC
5.5V
1.8V
V
CC
5.5V
4.5V
V
CC
5.5V
t
CSS
CS Setup Time
Relative to SK
2.7V
V
CC
5.5V
1.8V
V
CC
5.5V
4.5V
V
CC
5.5V
t
DIS
t
CSH
t
DIH
DI Setup Time
CS Hold Time
DI Hold Time
Relative to SK
Relative to SK
4.5V
V
CC
5.5V
Relative to SK
2.7V
V
CC
5.5V
1.8V
V
CC
5.5V
4.5V
V
CC
5.5V
t
PD1
Output Delay to 1
AC Test
2.7V
V
CC
5.5V
1.8V
V
CC
5.5V
4.5V
V
CC
5.5V
t
PD0
Output Delay to 0
AC Test
2.7V
V
CC
5.5V
1.8V
V
CC
5.5V
4.5V
V
CC
5.5V
t
SV
CS to Status Valid
AC Test
2.7V
V
CC
5.5V
1.8V
V
CC
5.5V
t
DF
t
WP
Endurance
(1)
Note:
1.
CS to DO in
High-impedance
Write Cycle Time
5.0V, 25°C
AC Test
CS = V
IL
4.5V
V
CC
5.5V
2.7V
V
CC
5.5V
1.8V
V
CC
5.5V
1.8V
V
CC
5.5V
0.1
3
1,000,000
250
250
1000
250
250
1000
250
250
1000
100
250
400
5
2.7V
V
CC
5.5V
1.8V
V
CC
5.5V
Min
0
0
0
250
250
1000
250
250
1000
250
250
1000
50
50
200
100
100
400
0
100
400
Typ
Max
2
1
250
Units
MHz
MHz
kHz
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
ns
ns
ns
ns
ns
ns
ms
Write Cycles
This parameter is characterized, and is not 100% tested.
AT93C46D [DATASHEET]
Atmel-5193H-SEEPROM-AT93C46D-Datasheet_012015
5
嵌入式系统
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
