mc9s12xd256 Freescale Semiconductor, Inc, mc9s12xd256 Datasheet - Page 32

• Manufacturer Part Number: mc9s12xd256
• Description: Hcs12x Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 1 Device Overview MC9S12XD-Family
1.1.1
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HCS12X Core
— 16-bit HCS12X CPU
— EBI (external bus interface)
— MMC (module mapping control)
— INT (interrupt controller)
— DBG (debug module to monitor HCS12X CPU and XGATE bus activity)
— BDM (background debug mode)
XGATE (peripheral coprocessor)
— Parallel processing module off loads the CPU by providing high-speed data processing and
— Data transfer between Flash EEPROM, RAM, peripheral modules, and I/O ports
PIT (periodic interrupt timer)
— Four timers with independent time-out periods
— Time-out periods selectable between 1 and 2
CRG (clock and reset generator)
— Low noise/low power Pierce oscillator
— PLL
— COP watchdog
— Real time interrupt
— Clock monitor
— Fast wake-up from stop mode
Port H & Port J with interrupt functionality
— Digital filtering
— Programmable rising or falling edge trigger
Memory
— 512, 256 and 128-Kbyte Flash EEPROM
— 4 and 2-Kbyte EEPROM
— 32, 16 and 12-Kbyte RAM
One 16-channel and one 8-channel ADC (analog-to-digital converter)
– Upward compatible with MC9S12 instruction set
– Interrupt stacking and programmer’s model identical to MC9S12
– Instruction queue
– Enhanced indexed addressing
– Enhanced instruction set
transfer
MC9S12XD/B/A Family Features
This section lists the features which are available on MC9S12XDP512. See
Appendix E Derivative Differences
sizes on other family members.
MC9S12XDP512 Data Sheet, Rev. 2.17
for availability of features and memory
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bus clock cycles
Freescale Semiconductor