LPC2157FBD100,551 NXP Semiconductors, LPC2157FBD100,551 Datasheet - Page 27

• Manufacturer Part Number: LPC2157FBD100,551
• Description: IC ARM7 MCU FLASH 512K 100LQFP
• Manufacturer: NXP Semiconductors
• Series: LPC2100r

Specifications of LPC2157FBD100,551

• Program Memory Type: FLASH
• Program Memory Size: 512KB (512K x 8)
• Package / Case: 100-LQFP
• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 60MHz
• Connectivity: I²C, Microwire, SPI, SSI, SSP, UART/USART
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 38
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x10b; D/A 1x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: LPC21
• Core: ARM7TDMI-S
• Data Bus Width: 16 bit, 32 bit
• Data Ram Size: 40 KB
• Interface Type: I2C/SPI
• Maximum Clock Frequency: 60 MHz
• Number Of Programmable I/os: 38
• Number Of Timers: 2
• Operating Supply Voltage: 2.4 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: MDK-ARM, RL-ARM, ULINK2
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8-ch x 10-bit
• On-chip Dac: 1-ch x 10-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 568-4310 - EVAL BOARD LPC2158 W/LCD568-4297 - BOARD EVAL LPC21XX MCB2100622-1005 - USB IN-CIRCUIT PROG ARM7 LPC2K
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 568-4524; 935287348551

NXP Semiconductors
Table 4.
LPC2157_2158_1
Product data sheet
Number of
Backplanes
4
3
2
1
Selection of display configurations
6.20.2 RealMonitor
6.21.1 General description
6.21.2 Functional description
6.21.3 LCD bias voltages
6.21 LCD driver
Segments
128
96
64
32
RealMonitor is a configurable software module, developed by ARM Inc., which enables
real-time debug. It is a lightweight debug monitor that runs in the background while users
debug their foreground application. It communicates with the host using the DCC, which is
present in the EmbeddedICE logic. The LPC2157/2158 contain a specific configuration of
RealMonitor software programmed into the on-chip flash memory.
The LCD segment driver in the LPC2157/2158 can interface to most LCDs using low
multiplex rates. It generates the drive signals for static or multiplexed LCDs containing up
to four backplanes and up to 32 segments. The LCD controller communicates to a host
using the I
LCD driver are available on the LPC2157/2158 providing system flexibility.
Communication overhead to manage the display is minimized by an on-chip display RAM
with auto-increment addressing, hardware subaddressing, and display memory switching
(static and duplex drive modes). Please refer to PCF8576D data sheet for electrical data.
The LCD controller is a versatile peripheral device designed to interface microcontrollers
to a wide variety of LCDs. It can directly drive any static or multiplexed LCD containing up
to four backplanes and up to 32 segments. The display configurations possible with the
LCD controller depend on the number of active backplane outputs required. A selection of
display configurations is shown in
in a typical system.
The microcontroller communicates to the LCD controller using the I
appropriate biasing voltages for the multiplexed LCD waveforms are generated internally.
The only other connections required to complete the system are to the power supplies
(V
LCD biasing voltages are obtained from an internal voltage divider consisting of three
series resistors connected between V
compensated externally via the supply to pin V
multiplexing of the LCD based on programmable configurations.
DD(LCD)
, V
7-segments numeric
Digits
16
12
8
4
2
C-bus. The I
SS
and V
LCD
Rev. 01 — 15 October 2008
2
) and the LCD panel chosen for the application.
C-bus clock and data signals for both the microcontroller and the
Indicator
symbols
16
12
8
4
Table
LCD
4. All of these configurations can be implemented
and V
14-segments alphanumeric
Characters
8
6
4
2
Single-chip 16-bit/32-bit microcontrollers
LCD
SS
. The LCD voltage can be temperature
. A voltage selector drives the
Indicator
symbols
16
12
8
4
LPC2157/2158
2
C-bus.The
© NXP B.V. 2008. All rights reserved.
Dot matrix
128
96
64
32
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