MCF51EM256CLL Freescale Semiconductor, MCF51EM256CLL Datasheet - Page 527

• 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

24.3.6
Read: anytime
Write: anytime
24.3.7
When LCDEN = 1, these bits enable the corresponding LCD pin for LCD operation.
These registers should only be written with instructions that perform byte writes, using instructions that
perform word writes will lead to invalid data being placed in the register. Initialize these registers before
enabling the LCD module. Exiting stop2 mode does not require reinitializing the LCDPEN registers.
Freescale Semiconductor
BRATE[2:0]
BMODE
Reset
LCDIF
Field
Field
2:0
3
7
W
R
LCDIF
LCD Status Register (LCDS)
LCD Pin Enable Registers 0–7 (LCDPEN0–LCDPEN7)
Blink Mode — Selects the blink mode displayed during the blink period. See
how BMODE affects the LCD display.
0 Display blank during the blink period
1 Display alternate display during blink period (Ignored if duty is 5 or greater)
Blink-Rate Configuration— Selects frequency at which the LCD display blinks when the BLINK is asserted.
Equation 24-2
Equation 24-2
LCD module blink rate calculations are provided in 24.4.3.2/-28.
LCD Interrupt Flag — LCDIF indicates an interrupt condition occurred. To clear the interrupt write a 1 to LCDIF.
0 interrupt condition has not occurred.
1 interrupt condition has occurred.
0
7
MCF51EM256 Series ColdFire Integrated Microcontroller Reference Manual, Rev. 8
LCD module blink rate
shows how BRATE[2:0] bit field is used in the
provides an expression for the LCD module blink rate
0
0
6
Unimplemented or Reserved
Table 24-9. LCDBCTL Field Descriptions (continued)
Figure 24-7. LCD Status Register (LCDS)
Table 24-10. LCDS Field Descriptions
0
0
5
=
2
(12+ BRATE[2:0])
0
0
4
Description
LCDCLK
Description
3
0
0
LCD
blink-rate calculation.
0
0
2
Table 24-9
for more information on
0
0
1
LCD Driver Module
Eqn. 24-2
0
0
0
24-11