Sharp LC-24DV250K (serv.man4) Service Manual ▷ View online
49
LC-24DV250
PERFORMANCE
• High Performance
-Fast access time: 20MHz serial clock (50pF + 1TTL Load)
-Fast program time: 5ms/page (typical, 128-byte per page)
-Fast erase time: 300ms/sector (typical, 8K-byte per sector)
• Low Power Consumption
-Low active read current: 10mA (typical) at 17MHz
-Low active programming current: 10mA (typical)
-Low active erase current: 10mA (typical)
-Low standby current: 30uA (typical, CMOS)
-Low active erase current: 10mA (typical)
-Low standby current: 30uA (typical, CMOS)
• Minimum 100,000 erase/program cycle
SOFTWARE FEATURES
• Input Data Format
-1-byte Command code, 3-byte address, 1-byte byte address
• 512-byte Sequential Read Operation
• Built in 9-bit (A0 to A8) pre-settable address counter to support the 512-byte sequential read
operation.
• Auto Erase and Auto Program Algorithm
• Auto Erase and Auto Program Algorithm
-Automatically erases and verifies data at selected sector
Automatically programs and verifies data at selected page by an internal algorithm that
automatically times the program pulse widths (Any page to be programmed should have page in the
erased state first)
erased state first)
• Status Register Feature
-Provides detection of program and erase operation completion.
-Provides auto erase/ program error report
-Provides auto erase/ program error report
HARDWARE FEATURES
• SCLK Input
-Serial clock input
• SI Input
-Serial Data Input
• SO Output
-Serial Data Output
• PACKAGE
-28-pin SOP (330mil)
50
LC-24DV250
b) General Description
The MX25L1602 is a CMOS 16,777,216 bit serial Flash EEPROM, which is configured as
2,097,152 x 8 internally. The MX25L1602 features a serial peripheral interface and software protocol
allowing operation on a simple 3-wire bus. The three bus signals are a clock input (SCLK), a serial
data input (SI), and a serial data output (SO). SPI access to the device is enabled by CS input.
data input (SI), and a serial data output (SO). SPI access to the device is enabled by CS input.
The MX25L1602 provide sequential read operation on whole chip. The sequential read operation
is executed on a segment (512 byte) basis. User may start to read from any byte of the segment.
While the end of the segment is reached, the device will wrap around to the beginning of the segment
and continuously outputs data until CS goes high.
While the end of the segment is reached, the device will wrap around to the beginning of the segment
and continuously outputs data until CS goes high.
After program/erase command is issued, auto program/ erase algorithms which program/erase and
verify the specified page locations will be executed. Program command is executed on a page (128
bytes) basis, and erase command is executed on both chip and sector (8K bytes) basis.
bytes) basis, and erase command is executed on both chip and sector (8K bytes) basis.
To provide user with ease of interface, a status register is included to indicate the status of the
chip. The status read command can be issued to detect completion and error flag status of a program
or erase operation.
or erase operation.
When the device is not in operation and CS is high, it is put in standby mode and draws less than
30uA DC current.
The MX25L1602 utilizes MXIC's proprietary memory cell which reliably stores memory contents
even after 100,000 programs and erase cycles.
Figure: Pin configuration.
51
LC-24DV250
Table 16: Pin description
10. USB Interface
Mstar IC has two input port for USB, therefore air mouse, internal wi-fi interface and USB2 are
combined with HUB. This property is optional. If air mouse and wi-fi interfaces are not aligned, two
USB are connected directly to main IC.
USB are connected directly to main IC.
Figure 10: USB description
52
LC-24DV250
USB2512B
a) General Description The SMSC USB251xB/xBi hub is a family of low-power, configurable,
MTT (multi transaction translator) hub controller IC products for embedded USB solutions. The x in
the part number indicates the number of downstream ports available, while the B indicates battery
charging support. The SMSC hub supports lowspeed, full-speed, and hi-speed (if operating as a
hispeed hub) downstream devices on all of the enabled downstream ports.
the part number indicates the number of downstream ports available, while the B indicates battery
charging support. The SMSC hub supports lowspeed, full-speed, and hi-speed (if operating as a
hispeed hub) downstream devices on all of the enabled downstream ports.
b) Features
- USB251xB/xBi products are fully footprint compatible with USB251x/xi/xA/xAi products
as direct drop-in replacements
• Cost savings include using the same PCB components and application of USB-IF
Compliance by Similarity
- Full power management with individual or ganged power control of each downstream
Port.
- Fully integrated USB termination and pull-up/pull down resistors
- Supports a single external 3.3 V supply source; internal regulators provide 1.2 V internal
core voltage.
- Onboard 24 MHz crystal driver, ceramic resonator, or external 24/48 MHz clock input.
- Customizable vendor ID, product ID, and device ID
- 4 kilovolts of HBM JESD22-A114F ESD protection (powered and unpowered)
- Supports self-or bus-powered operation
- Supports the USB Battery Charging specification Rev. 1.1 for Charging Downstream Ports
(CDP).
- 36-pin QFN (6x6 mm) Lead-free RoHS compliant package.
- USB251xBi products support the industrial temperature range of -40ºC to +85ºC
- USB251xB products support the extended commercial temperature range of 0ºC to +85ºC.
Compliance by Similarity
- Full power management with individual or ganged power control of each downstream
Port.
- Fully integrated USB termination and pull-up/pull down resistors
- Supports a single external 3.3 V supply source; internal regulators provide 1.2 V internal
core voltage.
- Onboard 24 MHz crystal driver, ceramic resonator, or external 24/48 MHz clock input.
- Customizable vendor ID, product ID, and device ID
- 4 kilovolts of HBM JESD22-A114F ESD protection (powered and unpowered)
- Supports self-or bus-powered operation
- Supports the USB Battery Charging specification Rev. 1.1 for Charging Downstream Ports
(CDP).
- 36-pin QFN (6x6 mm) Lead-free RoHS compliant package.
- USB251xBi products support the industrial temperature range of -40ºC to +85ºC
- USB251xB products support the extended commercial temperature range of 0ºC to +85ºC.
c) Applications
-LCD monitors and TVs
-Multi-function USB peripherals
-PC motherboards
-Set-top boxes, DVD players, DVR/PVR
-Printers and scanners
-PC media drive bay
-Portable hub boxes
Click on the first or last page to see other LC-24DV250K (serv.man4) service manuals if exist.