Sharp LC-22DS240K Service Manual ▷ View online
41
LC-22DV240
LC-22DS240
LC-22DS240
11.1. General Description
The NAND flash 528-byte/ 264-word page is a family of non-volatile flash memories that
uses the single level cell (SLC) NAND technology. It is referred to as the small page
family.
uses the single level cell (SLC) NAND technology. It is referred to as the small page
family.
The NAND512R3A2C, NAND512R4A2C, and NAND512W3A2C have a density of 512
Mbits and operate with either a 1.8 V or 3 V voltage supply. The size of a page is either
528 bytes (512 + 16 spare) or 264 words (256 + 8 spare) depending on whether the
device has a x8 or x16 bus width.
Mbits and operate with either a 1.8 V or 3 V voltage supply. The size of a page is either
528 bytes (512 + 16 spare) or 264 words (256 + 8 spare) depending on whether the
device has a x8 or x16 bus width.
The address lines are multiplexed with the Data Input/Output signals on a multiplexed x8
or x16 input/output bus. This interface reduces the pin count and makes it possible to
migrate to other densities without changing the footprint.
or x16 input/output bus. This interface reduces the pin count and makes it possible to
migrate to other densities without changing the footprint.
To extend the lifetime of NAND flash devices it is strongly recommended to implement an
error correction code (ECC). The use of ECC correction allows to achieve up to 100,000
program/erase cycles for each block. A write protect pin is available to give a hardware
protection against program and erase operations.
error correction code (ECC). The use of ECC correction allows to achieve up to 100,000
program/erase cycles for each block. A write protect pin is available to give a hardware
protection against program and erase operations.
11.2. Features
x
High density NAND flash memories
o 512-Mbit memory array
o Cost effective solutions for mass storage applications
o Cost effective solutions for mass storage applications
x
NAND interface
o x8 or x16 bus width
o Multiplexed address/ data
o Multiplexed address/ data
x
Supply voltage: 1.8 V, 3 V
x
Page size
o x8 device: (512 + 16 spare) bytes
o x16 device: (256 + 8 spare) words
o x16 device: (256 + 8 spare) words
x
Block size
o x8 device: (16K + 512 spare) bytes
o x16 device: (8K + 256 spare) words
o x16 device: (8K + 256 spare) words
x
Page read/program
o Random access: ȝV9ȝV9PD[
o Sequential access: 30 ns (3 V)/50 ns (1.8 V) (min)
o 3DJHSURJUDPWLPHȝVW\S
o Sequential access: 30 ns (3 V)/50 ns (1.8 V) (min)
o 3DJHSURJUDPWLPHȝVW\S
x
Copy back program mode
x
Fast block erase: 2 ms (typ)
11. NAND FLASH MEMORY-NAND512XXA2C (U162)
42
LC-22DV240
LC-22DS240
LC-22DS240
x
Status register
x
Electronic signature
x
Chip Enable ‘don’t care’
x
Security features
o OTP area
x
Serial number (unique ID) option
x
Hardware data protection
o Program/erase locked during power transitions
x
Data integrity
o 100,000 program/erase cycles (with ECC)
o 10 years data retention
o 10 years data retention
x
RoHS compliant packages
x
Development tools
o Error correction code models
o Bad blocks management and wear leveling algorithms
o Bad blocks management and wear leveling algorithms
11.3. Pinning
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LC-22DV240
LC-22DS240
LC-22DS240
12.1. General Description
The LM1117 is a series of low dropout voltage regulators with a dropout of 1.2V at 800mA
of load current. It has the same pin-out as National Semiconductor’s industry standard
LM317. The LM1117 is available in an adjustable version, which can set the output
voltage from 1.25V to 13.8V with only two external resistors. In addition, it is also
available in five fixed voltages, 1.8V, 2.5V, 2.85V, 3.3V, and 5V. The LM1117 offers
current limiting and thermal shutdown. Its circuit includes a zener trimmed bandgap
reference to as-sure output voltage accuracy to within ±1%. The LM1117 series is
available in SOT- 223, TO-220, and TO-252 D-3$. SDFNDJHV $ PLQLPXP RI ȝ)
of load current. It has the same pin-out as National Semiconductor’s industry standard
LM317. The LM1117 is available in an adjustable version, which can set the output
voltage from 1.25V to 13.8V with only two external resistors. In addition, it is also
available in five fixed voltages, 1.8V, 2.5V, 2.85V, 3.3V, and 5V. The LM1117 offers
current limiting and thermal shutdown. Its circuit includes a zener trimmed bandgap
reference to as-sure output voltage accuracy to within ±1%. The LM1117 series is
available in SOT- 223, TO-220, and TO-252 D-3$. SDFNDJHV $ PLQLPXP RI ȝ)
tantalum capacitor is required at the output to improve the transient response and
stability.
stability.
12.2. Features
x
Available in 1.8V, 2.5V, 2.85V, 3.3V, 5V, and Adjustable Versions
x
Space Saving SOT-223 Package
x
Current Limiting and Thermal Protection
x
Output Current 800mA
x
Line Regulation 0.2% (Max)
x
Load Regulation 0.4% (Max)
x
Temperature Range
x
LM1117 0°C to 125°C
x
LM1117I -40°C to 125°C
12.3. Applications
x
2.85V Model for SCSI-2 Active Termination
x
Post Regulator for Switching DC/DC Converter
x
High Efficiency Linear Regulators 15
x
32” TFT TV Service Manual 10/01/2005
x
Battery Charger
x
Battery Powered Instrumentation
12.4. Absolute Maximum Ratings
12.5. Pinning
12. LM1117 (U175, U180, U181)
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LC-22DV240
LC-22DS240
LC-22DS240
13.1. General Description
The MP2012 is a fully integrated, internally compensated 1.2MHz fixed frequency PWM
step-down converter. It is ideal for powering portable equipment that runs from a single
cell Lithium-Ion (Li+) Battery, with an input range from 2.7V to 6V. The MP2012 can
provide up to 1.5A of load current with output voltage as low as 0.8V. It can also operate
at 100% duty cycle for low dropout applications. With peak current mode control and
internal compensation, the MP2012 is stable with ceramic capacitors and small inductors.
Fault condition protection includes cycle-by-cycle current limiting and thermal shutdown.
step-down converter. It is ideal for powering portable equipment that runs from a single
cell Lithium-Ion (Li+) Battery, with an input range from 2.7V to 6V. The MP2012 can
provide up to 1.5A of load current with output voltage as low as 0.8V. It can also operate
at 100% duty cycle for low dropout applications. With peak current mode control and
internal compensation, the MP2012 is stable with ceramic capacitors and small inductors.
Fault condition protection includes cycle-by-cycle current limiting and thermal shutdown.
13.2. Features
x
2.7-6V Input Operation Range
x
Output Adjustable from 0.8V to VIN
x
ȝ$0D[6 KXWGRZQ&XUUHQW
x
Up to 95% Efficiency
x
100% Duty Cycle for Low Dropout
x
Applications
x
1.2MHz Fixed Switching Frequency
x
Stable with Low ESR Output Ceramic
x
Capacitors
x
Thermal Shutdown
x
Cycle-by-Cycle Over Current Protection
x
Short Circuit Protection
x
Available in 6-pin 3x3mm QFN
13.3. Pinning
Pin
#
Name
Description
1
FB
Feedback input. An external resistor divider from
the output to GND, tapped to the FB pin sets the
output voltage.
the output to GND, tapped to the FB pin sets the
output voltage.
2
GND,
Exposed
Pad
Ground pin. Connect exposed pad to ground
plane for proper thermal performance.
plane for proper thermal performance.
3
SW
Switch node to the inductor.
4
PVIN
Input supply pin for power FET.
5
VIN
Input Supply pin for controller. Put small
decoupling ceramic near this pin.
decoupling ceramic near this pin.
6
EN
Enable input, “High” enables MP2012. EN is
pulled to GND with 1Meg internal resistor.
pulled to GND with 1Meg internal resistor.
13. SMP2012 (U176)
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