MPC561MZP56 Freescale, MPC561MZP56 Datasheet - Page 897

• Manufacturer Part Number: MPC561MZP56
• Manufacturer: Freescale

Specifications of MPC561MZP56

• Cpu Family: MPC56x
• Device Core: PowerPC
• Device Core Size: 32b
• Frequency (max): 56MHz
• Interface Type: QSPI/SCI/SPI/UART
• Total Internal Ram Size: 32KB
• # I/os (max): 56
• Number Of Timers - General Purpose: 22
• Operating Supply Voltage (typ): 2.6/5V
• Operating Supply Voltage (max): 2.7/5.25V
• Operating Supply Voltage (min): 2.5/4.75V
• On-chip Adc: 2(32-chx10-bit)
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 125C
• Operating Temperature Classification: Automotive
• Mounting: Surface Mount
• Pin Count: 388
• Package Type: BGA
• Program Memory Type: ROMLess
• Program Memory Size: Not Required
• Lead Free Status / RoHS Status: Not Compliant

Chapter 22
CALRAM Operation
The calibration static random access memory (CALRAM) module provides the MPC561/MPC563 with a
general purpose memory that may be read from or written to as either bytes, half-words, or words. In
addition to this, a portion of the CALRAM, called the overlay region, can be used for calibration.
Calibration in this context is defined as overlaying portions of the U-bus Flash with a portion of the
CALRAM array. During normal Flash access, the RISC central processing unit (RPCU) reads data from
U-bus Flash (through L-bus and L2U) as shown in
providing the data, the overlay regions of CALRAM provide the data to the RPCU.
22.1
Standard CALRAM features are listed below:
Special overlay features are:
Freescale Semiconductor
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One-clock accesses
— Two-cycle access for power savings
Byte, half-word (16-bits), or word (32-bit) read/write accesses
Each 8-Kbyte block has individual protection control bits.
Low power standby operation for data retention
Eight overlay regions; each can be programmed to be 4-, 16-, 32-, 64-, 128-, 256-, or 512-bytes
long
Each overlay region size can be forced to 4 bytes long
Data driven from the CALRAM module for overlay access has the same timing as the data that
would have come from the U-bus Flash
Overlay is for data read from the U-bus Flash space and does not affect instruction fetches from
the Flash
Overlay block is naturally aligned
— For example, 128-byte block is 128-byte aligned
Normal access to overlaid portion of CALRAM array can be made to generate an error (machine
check) if so configured
Features
MPC561/MPC563 Reference Manual, Rev. 1.2
Figure
22-1. During calibration access, instead of Flash
22-1