
 2011-2023 Microchip Technology Inc. and its subsidiaries
DS20002067K-page 1
11AA010/11LC010 11AA080/11LC080
11AA020/11LC020 11AA160/11LC160
11AA040/11LC040 11AA161/11LC161
Features
• Single I/O, UNI/O
®
 Serial Interface Bus
• Low-Power CMOS Technology:
- 1 mA active current, typical
- 1 µA standby current (max.) (I-temp)
• 128 x 8 through 2,048 x 8 Bit Organizations
• Schmitt Trigger Inputs for Noise Suppression
• Output Slope Control to Eliminate Ground Bounce
• 100 kbps Max. Bit Rate – Equivalent to 100 kHz 
Clock Frequency
• Self-Timed Write Cycle (including Auto-Erase)
• Page-Write Buffer for up to 16 Bytes
• STATUS Register for Added Control:
- Write enable latch bit
- Write-In-Progress bit
• Block Write Protection:
- Protect none, 1/4, 1/2 or all of array
• Built-in Write Protection:
- Power-on/off data protection circuitry
- Write enable latch
• High Reliability:
- Endurance: 1,000,000 erase/write cycles
- Data retention: > 200 years
- ESD protection: > 4,000V
• RoHS Compliant
• Available Temperature Ranges:
• Automotive AEC-Q100 Qualified
Packages
• 3-lead SOT-23 and TO-92 Packages
• 4-lead Chip Scale Package
• 8-lead PDIP, SOIC, MSOP and TDFN Packages
Pin Function Table
Description
The Microchip Technology Inc. 11AAXXX/11LCXXX
(11XX
(1)
) devices are a family of 1-Kbit through 16-Kbit
Serial Electrically Erasable PROMs. The devices are
organized in blocks of x8-bit memory and support the
patented
(2)
 single I/O UNI/O
®
 serial bus. By using
Manchester encoding techniques, the clock and data
are combined into a single, serial bit stream (SCIO),
where the clock signal is extracted by the receiver to
correctly decode the timing and value of each bit.
Low-voltage design permits operation down to 1.8V (for
11AAXXX devices), with standby and active currents of
only 1 µA and 1 mA, respectively. 
Package Types (not to scale)
- Industrial (I):  -40°C to +85°C
- Extended (E): -40°C to +125°C
Name Function
SCIO Serial Clock, Data Input/Output
V
SS Ground
V
CC Supply Voltage
Note 1: 11XX is used in this document as a
generic part number for the 11 series
devices.
2: Microchip's UNI/O
®
 Bus products are
covered by some or all of the following
patents issued in the U.S.A.: 7.376,020 &
7,788,430.
NC
NC
NC
Vss
1
2
3
4
8
7
6
5
VCC
NC
NC
SCIO
PDIP/SOIC
(P, SN)
NC
NC
NC
V
SS
1
2
3
4
8
7
6
5
VCC
NC
NC
SCIO
(MS)
TDFN
NC
NC
NC
V
SS
NC
NC
SCIO
5
6
7
8
4
3
2
1
VCC
(MN)
MSOP
SOT23
2
3
1
SCIO
V
CC
VSS
(TT)
Vcc
TO-92
SCIO
(TO)
1
2
3
4
V
CC
VSS
NC
SCIO
(Top down view,
balls not visible
)
Note 1: Available in I-temp, “AA” only.
Vss
CS (Chip Scale)
(1)
1-Kbit to 16-Kbit UNI/O
®
 Serial EEPROM Family Data Sheet