MCF51EM256CLL Freescale Semiconductor, MCF51EM256CLL Datasheet - Page 517

• Manufacturer Part Number: MCF51EM256CLL
• Description: IC MCU 32BIT 256KB FLASH 100LQFP
• Manufacturer: Freescale Semiconductor
• Series: MCF51EMr

Specifications of MCF51EM256CLL

• Core Processor: Coldfire V1
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: I²C, SCI, SPI
• Peripherals: LCD, LVD, PWM, WDT
• Number Of I /o: 63
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 16x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-LQFP
• Processor Series: MCF51EM
• Core: ColdFire V1
• Data Bus Width: 32 bit
• Data Ram Size: 16 KB
• Interface Type: RS-232, LIN
• Maximum Clock Frequency: 50 MHz
• Number Of Timers: 3
• Operating Supply Voltage: 1.8 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: JLINK-CF-BDM26, EWCF
• Development Tools By Supplier: DEMOEM
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Chapter 24
LCD Driver Module
24.1
The LCD driver module is a CMOS charge pump voltage inverter that is designed for low-voltage,
low-power operation. The LCD driver module is designed to generate the appropriate waveforms to drive
multiplexed numeric, alpha-numeric, or custom LCD panels. Depending on LCD module hardware and
software configuration, the LCD panels can be either 3 V or 5 V. The LCD module also has several timing
and control settings that can be software configured depending on the applications requirements. Timing
and control consists of registers and control logic for:
100 pin members of the MCF51EM256 series family have a total of 44 available LCD signals pins. Up to
eight of these can be configured for back plane use. 80 pin members of the family have 37 LCD signal pins
available. OSCOUT1 that comes from the IRTC is the OSCOUT input to the LCD module and the
OSCOUT2 that comes from the ICS external crystal is the alternate clock. Several possible LCD
configurations are summarized in
24.1.1
On this device, OSCOUT1 is connected to the OSCOUT clock input and OSCOUT2 is connected to the
alternate clock input. Refer to section 21.5.1 for details on LCD clock selection.
Freescale Semiconductor
100 pin device
•
•
•
•
•
44 LCD pins
available
LCD frame frequency
Duty cycle select
Frontplane/backplane select and enable
Blink modes and frequency
Operation in low-power modes
X
X
X
Introduction
Clock Sources for LCD
MCF51EM256 Series ColdFire Integrated Microcontroller Reference Manual, Rev. 8
80 pin device
37 LCD pins
available
X
Table 24-1. Example Configurations by Package Type
Table
No. of Backplanes
24-1.
8
2
8
No. of Frontplanes
36
40
25
No. of Segments
288
200
80
24-1