MC68HC000RC12 Freescale Semiconductor, MC68HC000RC12 Datasheet - Page 72

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MC68HC000RC12

Manufacturer Part Number
MC68HC000RC12
Description
IC MPU 32BIT 12MHZ 68-PGA
Manufacturer
Freescale Semiconductor
Datasheets

Specifications of MC68HC000RC12

Processor Type
M680x0 32-Bit
Speed
12MHz
Voltage
3.3V, 5V
Mounting Type
Surface Mount
Package / Case
68-PGA
Family Name
M68000
Device Core
ColdFire
Device Core Size
16/32Bit
Frequency (max)
12MHz
Instruction Set Architecture
RISC
Supply Voltage 1 (typ)
5V
Operating Supply Voltage (max)
5.25V
Operating Supply Voltage (min)
4.75V
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Through Hole
Pin Count
68
Package Type
PGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Lead Free Status / Rohs Status
Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MC68HC000RC12
Manufacturer:
MOT
Quantity:
129
Part Number:
MC68HC000RC12
Manufacturer:
CY
Quantity:
650
Part Number:
MC68HC000RC12
Manufacturer:
MOT
Quantity:
2
5.4.2 Retrying The Bus Cycle
The assertion of the bus error signal during a bus cycle in which HALT is also asserted by
an external device initiates a retry operation. Figure 5-27 is a timing diagram of the retry
operation. The delayed BERR signal in the MC68010 also initiates a retry operation when
HALT is asserted by an external device. Figure 5-28 shows the timing of the delayed
operation.
5-26
LDS/UDS
FC2-FC0
D15–D0
A23–A1
DTACK
BERR
HALT
R/W
CLK
AS
S0
In the MC68010, if a read-modify-write operation terminates in
a bus error, the processor reruns the entire read-modify-write
operation when the RTE instruction at the end of the bus error
handler returns control to the instruction in error. The
processor reruns the entire operation whether the error
occurred during the read or write portion.
S2
M68000 8-/16-/32-BIT MICROPROCESSORS USER'S MANUAL
READ
Figure 5-27. Retry Bus Cycle Timing Diagram
S4
Freescale Semiconductor, Inc.
For More Information On This Product,
S6
S8
Go to: www.freescale.com
1 CLOCK PERIOD
NOTE
HALT
S0
S2
RETRY
S4
S6
MOTOROLA

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