MC68EC040RC25 Freescale Semiconductor, MC68EC040RC25 Datasheet - Page 147

• Manufacturer Part Number: MC68EC040RC25
• Manufacturer: Freescale Semiconductor

Specifications of MC68EC040RC25

• Family Name: M68000
• Device Core: ColdFire
• Device Core Size: 32b
• Frequency (max): 25MHz
• Instruction Set Architecture: RISC
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Through Hole
• Pin Count: 179
• Package Type: PGA
• Lead Free Status / Rohs Status: Supplier Unconfirmed

A brief summary of the bus signal encodings for each access type is listed in Table 7-2.
Additional information on the encodings for the M68040 signals can be found in Section 5
Signal Description.
MOTOROLA
Figure 7-4. Byte Enable Signal Generation and PAL Equation
SIZ0
SIZ1
PAL16L8
U1
MC68040 Byte Data Select Generation.
Motorola Worldwide Marketing Training Organization
A0 A1 SIZ0 SIZ1 NC NC NC NC NC GND NC UUD UMD LMD LLD
NC NC NC NC VCC
/UUD = /A0 * /A1
/UMD = A0 * /A1
/LMD = /A0 * /A1
/LLD =
A0
A1
Freescale Semiconductor, Inc.
+ /SIZ1 * /SIZ0
+ SIZ1 * SIZ0
+ /A1 * /SIZ1
+ SIZ1 * SIZ0
+ /SIZ1 * /SIZ0
+ /SIZ1 * /SIZ0
+ SIZ1 * SIZ0
+ /A1 * /SIZ1
+ SIZ1 * SIZ0
+ /SIZ1 * /SIZ0
A0 * /A1
For More Information On This Product,
Go to: www.freescale.com
M68040 USER’S MANUAL
; directly addressed, any size
; enable every byte for long word size
; enable every byte for line size
; directly addressed, any size
; word aligned, size is word or line
; enable every byte for long word size
; enable every byte for line size
; directly addressed, any size
; enable every byte for long word size
; enable every byte for line size
; directly addressed, any size
; word aligned, word or line size
; enable every byte for long word size
; enable every byte for line size
UPPER UPPER DATA SELECT
D31–D24
UPPER MIDDLE DATA SELECT
D23–D16
LOWER MIDDLE DATA SELECT
D15–D8
LOWER LOWER DATA SELECT
D7–D0
7- 5