mcf51ac256a Freescale Semiconductor, Inc, mcf51ac256a Datasheet - Page 151

• Manufacturer Part Number: mcf51ac256a
• Description: Mcf51ac Flexis
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
DEBUG
31–24
23–20
19–16
Field
13–8
MAC
VER
REV
DIV
7–4
3–0
ISA
PF
15
14
Processor family. This field is fixed to a hex value of 0xCF indicating a ColdFire core is present.
ColdFire core version number. Defines the hardware microarchitecture version of ColdFire core.
0001 V1 ColdFire core (This is the value used for this device.)
0010 V2 ColdFire core
0011 V3 ColdFire core
0100 V4 ColdFire core
0101 V5 ColdFire core
Else Reserved for future use
Processor revision number. The default is 0b0000.
MAC present. This bit signals if the optional multiply-accumulate (MAC) execution engine is present in processor core.
0 MAC execute engine not present in core. (This is the value used for this device.)
1 MAC execute engine is present in core.
Divide present. This bit signals if the hardware divider (DIV) is present in the processor core.
0 Divide execute engine not present in core. (This is the value used for this device.)
1 Divide execute engine is present in core.
Reserved.
ISA revision. Defines the instruction-set architecture (ISA) revision level implemented in ColdFire processor core.
0000 ISA_A
0001 ISA_B
0010 ISA_C (This is the value used for this device.)
1000 ISA_A+
Else Reserved
Debug module revision number. Defines revision level of the debug module used in the ColdFire processor core.
0000 DEBUG_A
0001 DEBUG_B
0010 DEBUG_C
0011 DEBUG_D
0100 DEBUG_E
1001 DEBUG_B+ (This is the value used for this device.)
1011 DEBUG_D+
1111 DEBUG_D+PST Buffer
Else Reserved
MCF51AC256 ColdFire Integrated Microcontroller Reference Manual, Rev. 5
Table 7-11. D0 Hardware Configuration Info Field Description
Description
ColdFire Core
7-21