MCF51EM256CLL Freescale Semiconductor, MCF51EM256CLL Datasheet - Page 526

• 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

LCD Driver Module
The regulated voltage can be used to generate a reference signal to the LCD charge pump for 3V or 5V
LCD operation dependant on the HREFSEL bit.
24.3.5
Read: anytime
Write: anytime
24-10
RVTRIM[3:0]
Reset
BLANK
BLINK
RVEN
Field
Field
ALT
3:0
7
6
5
7
W
R
BLINK
LCD Blink Control Register (LCDBCTL)
Blink Command — Starts or stops LCD module blinking
0 Disables blinking
1 Starts blinking at blinking frequency specified by
Alternate Display Mode — For four backplanes or less the LCD backplane sequencer changes to output an
alternate display. ALT bit is ignored if Duty is 5 or greater.
0 Normal Display
1 Alternate display mode
Blank Display Mode — Asserting this bit clears all segments in the LCD display.
0 Normal or Alternate Display
1 Blank Display Mode
0
7
Regulated Voltage Enable — Enables internal voltage regulator, Must have charge pump enabled.
0 Regulated voltage disabled.
1 Regulated voltage enabled.
Regulated Voltage Trim—This 4 bit trim register is used to adjust the regulated input. Each bit in the register
MCF51EM256 Series ColdFire Integrated Microcontroller Reference Manual, Rev. 8
has equal weight. The Regulated input is changed by 1.5% for each count.
ALT
0
6
Unimplemented or Reserved
Figure 24-6. LCD Blink Control Register (LCDBCTL)
Table 24-9. LCDBCTL Field Descriptions
Table 24-8. LCDRVC Field Descriptions
BLANK
0
5
0
0
4
Description
Description
LCD
BMODE
blink rate calculation (see
3
0
BRATE2
0
2
Equation
BRATE1
Freescale Semiconductor
0
1
24-2)
BRATE0
0
0