MCF51EM256CLL Freescale Semiconductor, MCF51EM256CLL Datasheet - Page 125

• 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

4.7
Package pins on the MCF51EM256 series can be programmed for up to four different functions using the
Pin Mux Control Registers. Controls are organized by GPIO Port. Each GPIO port has two mux control
registers, comprised 2 bits per package pin. All pin mux registers default to value 0x00 at reset. Alternate
values are defined in the remainder of this section. Please note that the encoding for each function matches
the column number in which that function occurs in
0x00, ALT1 functions 0x01 and so forth.
The RGPIO_ENB register is used to select between GPIO and RGPIO functions on pins that have both.
Pin mux controls will leave GPIO input buffers enabled for all digital functions, regardless of mux control
selection. This gives the user the ability to poll a port to decode a key pressed after a keyboard interrupt is
asserted. The same function can be used for IRQ pin level detection and debounce software.
Freescale Semiconductor
0x(FF)FF_820A
0x(FF)FF_820B
0x(FF)FF_820C
0x(FF)FF_820D
0x(FF)FF_8204
0x(FF)FF_8205
0x(FF)FF_8206
0x(FF)FF_8207
0x(FF)FF_8208
0x(FF)FF_8209
0x(FF)FF_8200
0x(FF)FF_8201
0x(FF)FF_8202
0x(FF)FF_8203
Address
Pin Mux Controls
Configuring the mux control registers to the ADC pins disables the digital
function of the pin to ensure proper ADC conversion.
MCF51EM256 Series ColdFire Integrated Microcontroller Reference Manual, Rev. 8
Register
PTCPF2
PTDPF1
PTDPF2
LCDPF1
LCDPF2
PTBPF1
PTBPF2
PTCPF1
PTEPF1
PTEPF2
PTFPF1
PTFPF2
PTAPF1
PTAPF2
Table 4-21. Pin Mux Control Registers
Bit 7
0
LCD9
A7
A3
B7
B3
C7
C3
D7
D3
E7
E3
F7
F3
6
0
NOTE
Table
0
5
2-2. That is, default functions are assigned value
LCD8
A6
A2
B6
B2
C6
C2
D6
D2
E6
E2
F6
F2
4
0
3
0
LCD7
C5
C1
D5
D1
E5
E1
A5
A1
B5
B1
F5
F1
0
2
Parallel Input/Output Control
1
LCD35
LCD6
C0
D4
D0
A4
A0
B4
B0
C4
E4
E0
F4
F0
Bit 0
4-15