AN2866 Freescale Semiconductor / Motorola, AN2866 Datasheet - Page 4

• Manufacturer Part Number: AN2866
• Description: Migrating from the MC68332 to the ColdFire MCF523x
• Manufacturer: Freescale Semiconductor / Motorola

Time Processing
Device Feature
CPU Frequency
Instruction/Data
Communication
Comparison Overview
Table 1
the MCF523x. It also provides a page reference to the detailed description of the specific migrating issue.
4
Unit Channels
SPRAM/SCM
Interrupt Pins
TPU Memory
Performance
Chip Selects
SRAM Size
Cache Size
Frequency
Packaging
CPU Core
SDRAMC
Ethernet
External
System
Voltage
•
•
•
•
Serial
DMA
Seven types of resets, including low power supply voltage detection, and a status register to
indicate the cause of last reset
Up to eight chip selects with programmable wait states, port sizes, and transfer burstability on
reads or writes, as well as support for paged mode Flash memories
Module access control, including read/write access in either user or supervisor mode, for on-chip
modules
Bus master arbitration and prioritization for three on-chip masters (core, FEC, and DMA
controller)
provides a brief look at the design considerations and benefits of migration from the MC68332 to
16-channel
144 LQFP,
MC68332
200bytes/
7.5 MIPS
132 PQF
2 Kbytes
25 MHz
2kbytes
25 MHz
CPU32
1 SCI
QSPI
5.0V
TPU
12
—
—
—
—
—
7
Migrating from the MC68332 to the ColdFire
Table 1. MC68332 to MCF523x Migration Issue Summary
32-channel
MCF5235
eTPU
16 or
√
Device Implementation
256 MAPBGA
16-channel
MCF5234
eTPU
7
√
Up to 2 blocks
V2 ColdFire
1.5Kbytes/
1.5V Core
64 Kbytes
144 MIPS
4 channel
150 MHz
3.3V I/O,
3 UARTs
8 Kbytes
6 Kbytes
75 MHz
Up to 7
QSPI
I
2
C
32-channel
MCF5233
eTPU
—
7 (MAPBGA)
16-channel
MCF5232
MAPBGA
160 QFP,
3 (QFP)
eTPU
196
®
—
MCF523x, Rev. 1.0
Hardware
—
—
—
—
√
√
√
√
√
√
√
√
√
√
√
√
√
√
Impact
Code
—
—
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
Freescale Semiconductor
Criticality
Migration
Medium
Medium
Medium
Medium
High
High
High
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Number
Page
25
12
18
11
11
16
19
19
13
14
20
18
6
6
6
5
6