MC68340PV16VE Freescale Semiconductor, MC68340PV16VE Datasheet - Page 86

• Manufacturer Part Number: MC68340PV16VE
• Description: IC MCU 32BIT 16MHZ 144-LQFP
• Manufacturer: Freescale Semiconductor

Specifications of MC68340PV16VE

• Processor Type: M683xx 32-Bit
• Speed: 16MHz
• Voltage: 3.3V
• Mounting Type: Surface Mount
• Package / Case: 144-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

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
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IGNORED
SW
DATA
S4
HALT
S0
READ RERUN
S2
S4
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