MCF51EM256CLL Freescale Semiconductor, MCF51EM256CLL Datasheet - Page 111

• 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 4
Parallel Input/Output Control
4.1
4.1.1
This section explains software controls related to parallel input/output (I/O) and pin control. The
MCF51EM256 series MCUs have up to six parallel I/O ports which include a total of 48 I/O pins,
including one output-only pin. See
assignments and external hardware considerations of these pins. The MCF51EM256 series MCUs have
multiplexed functions in several pins and there is a set of registers to control the multiplex functions in
those pins, see
Table 4-1
4.1.2
In addition to standard GPIO functionality, Ports A and B are implemented using “Rapid GPIO” functions
which are integrated as part of the ColdFire core itself to improve edge resolution on those pins. RGPIO
Freescale Semiconductor
1
2
Possible values are “Standard”, “SCT” and RGPIO. SCT GPIO has all functions associated with Standard GPIO, with
the addition of SET, CLEAR and TOGGLE functions. SCT functions are not present on all V1 ColdFire devices. RGPIO
standards for “Rapid GPIO”, and is a high data rate implementation bundled with the V1 ColdFire.
PE = Pullup Enable, SE = Slew Rate Enable, DS = Drive Strength Control, IFE = Input Filter Enable.
Port Name
MCF51EM256 Series Functions Overview
summarizes capabilities for the MCF51EM256 series MCUs on a per port basis.
PTB
PTC
PTD
PTE
PTF
PTA
Summary
Ports Implemented via Rapid GPIO
The configuration of the GPIOs as slew rate control, drive strenght, pullup
and input filter affects all modules that share these pins as digital I/O
functions.
Section 4.7, “Pin Mux
MCF51EM256 Series ColdFire Integrated Microcontroller Reference Manual, Rev. 8
Width
8
8
8
8
8
8
Table 4-1. Functionality on a Per Port Basis
Chapter 2, “Pins and Connections,”
GPIO Implementaton
SCT & RGPIO[15:8]
Controls” for more information.
SCT & RGPIO[7:0]
SCT
SCT
SCT
SCT
NOTE
1
PTB[7:6,3:0] = KBI1[5:0]
PTC[1:0] = KBI1[7:6]
Keyboard Interface
KBI2[7:0]
—
—
—
for more information about pin
PE, SE, DS, IFE
PE, SE, DS, IFE
PE, SE, DS, IFE
PE, SE, DS, IFE
PE, SE, DS, IFE
PE, SE, DS, IFE
Pin Control
2
4-1