MC68EC060RC50 Freescale Semiconductor, MC68EC060RC50 Datasheet - Page 205

• Manufacturer Part Number: MC68EC060RC50
• Description: IC MPU 32BIT 50MHZ 206-PGA
• Manufacturer: Freescale Semiconductor

Specifications of MC68EC060RC50

• Processor Type: M680x0 32-Bit
• Speed: 50MHz
• Voltage: 3.3V
• Mounting Type: Surface Mount
• Package / Case: 206-PGA
• Family Name: M68000
• Device Core: ColdFire
• Device Core Size: 32b
• Frequency (max): 50MHz
• Instruction Set Architecture: RISC
• Supply Voltage 1 (typ): 3.3V
• Operating Supply Voltage (max): 3.465V
• Operating Supply Voltage (min): 3.135V
• Operating Temp Range: 0C to 110C
• Operating Temperature Classification: Commercial
• Mounting: Through Hole
• Pin Count: 206
• Package Type: PGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -
• Lead Free Status / Rohs Status: Compliant

Bus Operation
The MC68060 considers the resulting second, third, and fourth long-word bus cycles of a
burst-inhibited line transfer as part of the original line transfer cycle. Therefore, the MC68060
interprets a retry termination during these bus cycles as though they were part of the original
line transfer, and depending on the acknowledge termination mode, a retry termination is
either interpreted as a bus error (MC68040 mode) or ignored (native-MC68060 mode).
Negating the bus grant (BG) signal on the MC68060 while indicating a retry termination pro-
vides a relinquish and retry operation for any bus cycle that can be retried (see Figure 7-44).
If retrying a bus cycle that is part of a locked sequence of bus cycles, a relinquish and retry
of the bus requires BGR be asserted along with BG negated to cause the processor to abort
any following locked bus cycles that are a part of the locked sequence.
7-50
NATIVE-MC68060
ACKNOWLEDGE
ACKNOWLEDGE
TERMINATION
TERMINATION
MC68040
MISCELLANEOUS
MODE
MODE
ATTRIBUTES
SIZ1–SIZ0
Figure 7-39. Retry Read Bus Cycle Timing
A31–A0
D31–D0
BCLK
R/W
TEA
TEA
SAS
TIP
TRA
TRA
TS
TA
TA
M68060 USER’S MANUAL
C1
RETRY SIGNALED
READ CYCLE
CW
C2
LONG
C1
RETRY
CYCLE
C2
MOTOROLA