mcf51em256 Freescale Semiconductor, Inc, mcf51em256 Datasheet - Page 9

• Manufacturer Part Number: mcf51em256
• Description: Microcontrollers Covers Mcf51em256 Mcf51em128
• Manufacturer: Freescale Semiconductor, Inc

1.4
Freescale Semiconductor
•
•
(MCF = Fully Qualified ColdFire)
(PCF = Product Engineering)
— SCIx — Three serial communications interface modules with optional 13-bit break; option to
— SPIx— Two serial peripheral interfaces (SPI2, SPI3) with full-duplex or single-wire
— SPI16— Serial peripheral interface (SPI1) with 32-bit FIFO buffer; 16-bit or 8-bit data
— IIC — Up to 100 kbps with maximum bus loading; multi-master operation; programmable
— MTIMx — Two 8-bit and one 16-bit modulo timers with 4-bit prescaler; overflow interrupt;
— TPM — 2-channel Timer/PWM module; selectable input capture, output compare, or buffered
Input/output
— up to 16 rapid GPIO and 48 standard GPIOs, including 1 output-only pin and 3 open-drain pins.
— up to 16 keyboard interrupts with selectable polarity
— Hysteresis and configurable pullup device on all input pins; configurable slew rate and drive
Package options
— 100-pin LQFP, 80-pin LQFP
Part Numbers
front-plane/backplane pin assignments; operation in all low power modes with blink
functionality
connect Rx input to PRACMP output on SCI1 and SCI2; high current drive on Tx on SCI1 and
SCI2; wakeup from stop3 on Rx edge. SCI1 and SCI2 Tx pins can be modulated with timer
outputs for use with IR interfaces
bidirectional; double-buffered transmit and receive; master or slave mode; MSB-first or
LSB-first shifting
transfers; full-duplex or single-wire bidirectional; double-buffered transmit and receive; master
or slave mode; MSB-first or LSB-first shifting
slave address; interrupt driven byte-by-byte data transfer; supports broadcast mode and 10 bit
addressing
external clock input/pulse accumulator
edge- or center-aligned PWM on each channel; external clock input/pulse accumulator; can be
used modulate SCI1 and SCI2 TX pins
strength on all output pins
Status
Family
Core
MCF51EM256 Series ColdFire Microcontroller Data Sheet, Rev.3
MCF
Preliminary—Subject to Change Without Notice
51
EM 256
C
XX
Temperature range
(C= –40°C to 85°C )
Package designator
Memory size designator
MCF51EM256 Series Configurations
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