OM6290 NXP Semiconductors, OM6290 Datasheet - Page 14

• Manufacturer Part Number: OM6290
• Description: DEMO BOARD LCD GRAPHIC DRIVER
• Manufacturer: NXP Semiconductors

Specifications of OM6290

• Main Purpose: Displays, LCD Controller
• Embedded: Yes, MCU, 16/32-Bit
• Utilized Ic / Part: PCF2119, PCF8531, PCF8576
• Primary Attributes: Character, Graphic and Segment LCD Drivers
• Secondary Attributes: JTAG, I²C, UART & USB Interfaces
• Description/function: Demo Board
• Interface Type: USB, I2C, JTAG, UART
• Data Bus Width: 4 bit, 8 bit, 16 bit
• Operating Voltage: 1.8 V to 5.5 V
• For Use With/related Products: PCF8576DT, PCF2119S, PCF8531
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 568-4703

NXP Semiconductors
4. The onboard microcontroller
UM10300_1
User manual
3.3.3 Block diagram
The microcontroller chosen for this board is the LPC2148 which is a member of the NXP
ARM7 controller family. This microcontroller is based on a 16-bit/32-bit ARM7TDMI-S
CPU with real-time emulation and embedded trace support and embedded high-speed
flash memory of 512 kB. A 128-bit wide memory interface and a unique accelerator
architecture enable 32-bit code execution at the maximum clock rate. For critical code
size applications, the alternative 16-bit Thumb mode reduces code by more than 30 %
with minimal performance penalty.
The LPC2148 is highly over specified for the demo application program. This allows the
user to program the MCU with much more advanced applications. Also, it has some very
convenient features like an integrated USB interface and the possibility to program new
firmware versions in the embedded flash using In-circuit Serial Programming via the PC’s
serial port. This enables modifications in the firmware to be quickly evaluated.
Fig 4. Block diagram PCF8531
V
LCDSENSE
V
LCDOUT
SDACK
V
LCDIN
V
V
SDA
SCL
SS1
SS2
T1
T2
T3
T4
GENERATOR
GENERATOR
VOLTAGE
FILTERS
Rev. 1.0— 8 August 2008
INPUT
V
BIAS
LCD
R0 to R33
DRIVERS
ROW
PCF8531
34
CONTROL
I
2
DISPLAY DATA RAM
C-BUS
SA0
DATA LATCHES
MATRIX DATA
C0 to C127
LATCHES
DRIVERS
COLUMN
MATRIX
RAM
128
COMMAND
DECODER
V
DD1
POWER-ON RESET
INTERNAL
RESET
V
OSCILLATOR
GENERATOR
DD2
ADDRESS
COUNTER
ADDRESS
COUNTER
DISPLAY
TIMING
User Manual OM6290
UM10300
V
© NXP B.V. 2008. All rights reserved.
DD3
mgs465
ENR
RES
OSC
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