MCF51EM256CLL Freescale Semiconductor, MCF51EM256CLL Datasheet - Page 525

• 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

VSUPPLY[1:0]
24.3.4
Read: anytime.
Write: anytime.
Freescale Semiconductor
HREFSEL
BBYPASS
LADJ[1:0]
Reset
CPSEL
Field
5:4
1:0
7
6
2
W
R
RVEN
LCD Regulated Voltage Control Register (LCDRVC)
0
7
Charge Pump or Resistor Bias Select — Selects LCD module charge pump or a resistor network to supply
the LCD voltages V
0 LCD charge pump is disabled. Resistor network selected (The internal 1/3-bias is forced.)
1 LCD charge pump is selected. Resistor network disabled (The internal 1/3-bias is forced.)
High Reference Select— When using the V
V
0 Divide input, V
1 Do not divide the input, V
LCD Module Load Adjust — The LCD load adjust bits are used to configure the LCD module to handle different
LCD glass capacitance.
For CPSEL = 1
Adjust the clock source for the charge pump. Higher loads require higher charge pump clock rates.
00 - Fastest clock source for charge pump (LCD glass capacitance 8000pf or lower)
01 - Intermediate clock source for charge pump (LCD glass capacitance 6000pf or lower))
10 - Intermediate clock source for charge pump (LCD glass capacitance 4000pf or lower)
11 - Slowest clock source for charge pump (LCD glass capacitance 2000pf or lower)
For CPSEL = 0
Adjust the resistor bias network for different LCD glass capacitance
00 - Low Load (LCD glass capacitance 2000pf or lower)
01 - Low Load (LCD glass capacitance 2000pf or lower)
10 - High Load (LCD glass capacitance 8000pf or lower)
11 - High Load (LCD glass capacitance 8000pf or lower)
Op Amp Control — Determines whether the internal LCD op amp buffer is bypassed.
0 Buffered mode
1 Unbuffered mode
Voltage Supply Control — Configures whether the LCD module power supply is external or internal. Avoid
00 Drive V
01 Drive V
10
11 Drive V
LL1
MCF51EM256 Series ColdFire Integrated Microcontroller Reference Manual, Rev. 8
modifying this bit field while the LCD module is enabled (e.g., LCDEN = 1). See
.
Figure 24-5. LCD Regulated Voltage Control Register (LCDRVC)
LL2
LL3
LL3
0
0
6
Unimplemented or Reserved
internally from V
internally from V
externally
LCD
LL1
Table 24-7. LCDSUPPLY Field Descriptions
IN = V
, V
LL2
LCDEXT
LCD
, and V
0
0
5
DD
DD
IN = V
LL3
* 2/3, V
. See
LCDEXT
IREG
0
0
4
Figure 24-15
LCD
* 3/3, V
= 1.0V
or V
Description
IREG
IREG
RVTRIM3
for more detail.
inputs, this bit configures internal circuits to supply
3
1
= 1.67 V
RVTRIM2
0
2
Figure 24-15
RVTRIM1
0
1
LCD Driver Module
for more detail.
RVTRIM0
0
0
24-9