MC68340AG16E Freescale Semiconductor, MC68340AG16E Datasheet - Page 86
MC68340AG16E
Manufacturer Part Number
MC68340AG16E
Description
IC MPU 32BIT 16MHZ 144-LQFP
Manufacturer
Freescale Semiconductor
Datasheet
1.MC68340FE25E.pdf
(441 pages)
Specifications of MC68340AG16E
Processor Type
M683xx 32-Bit
Speed
16MHz
Voltage
5V
Mounting Type
Surface Mount
Package / Case
144-LQFP
Controller Family/series
68K
Core Size
32 Bit
No. Of I/o's
16
Cpu Speed
16MHz
No. Of Timers
2
Embedded Interface Type
UART
Digital Ic Case Style
LQFP
Rohs Compliant
Yes
Processor Series
M683xx
Core
CPU32
Maximum Clock Frequency
16 MHz
Maximum Operating Temperature
+ 105 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
0 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Lead Free Status / Rohs Status
Details
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The MC68340 retries any read or write cycle of a read-modify-write operation separately;
RMC remains asserted during the entire retry sequence. Asserting BR along with BERR
and HALT provides a relinquish and retry operation. The MC68340 does not relinquish the
bus during a read-modify-write operation. Any device that requires the MC68340 to give
up the bus and retry a bus cycle during a read-modify-write cycle must assert only BERR
and BR ( HALT must not be included). The bus error handler software should examine the
read-modify-write bit in the special status word (see Section 5 CPU32) and take the
appropriate action to resolve this type of fault when it occurs.
MOTOROLA
FC3–FC0
CLKOUT
DSACKx
A31–A0
D15–D0
BERR
HALT
R/W
DS
AS
S0
Freescale Semiconductor, Inc.
S2
For More Information On This Product,
READ CYCLE WITH
SW
Figure 3-19. Retry Sequence
RETRY
MC68340 USER’S MANUAL
Go to: www.freescale.com
IGNORED
SW
DATA
S4
HALT
S0
READ RERUN
S2
S4
3- 37
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