MC68HC000EI16 Freescale Semiconductor, MC68HC000EI16 Datasheet - Page 77

IC MPU 32BIT 16MHZ 68-PLCC

MC68HC000EI16

Manufacturer Part Number
MC68HC000EI16
Description
IC MPU 32BIT 16MHZ 68-PLCC
Manufacturer
Freescale Semiconductor
Datasheets

Specifications of MC68HC000EI16

Processor Type
M680x0 32-Bit
Speed
16MHz
Voltage
3.3V, 5V
Mounting Type
Surface Mount
Package / Case
68-PLCC
Family Name
M68000
Device Core
ColdFire
Device Core Size
16/32Bit
Frequency (max)
16MHz
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
Surface Mount
Pin Count
68
Package Type
PLCC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Lead Free Status / Rohs Status
Compliant

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LEGEND:
NOTE: All operations are subject to relevant setup and hold times.
The negation of BERR and HALT under several conditions is shown in Table 5-6. (DTACK
is assumed to be negated normally in all cases; for reliable operation, both DTACK and
BERR should be negated when address strobe is negated).
EXAMPLE A:
EXAMPLE B:
MOTOROLA
NA — Signal not asserted in this bus state
Case
No.
N — The number of the current even bus state (e.g., S4, S6, etc.)
A — Signal asserted in this bus state
X — Don't care
S — Signal asserted in preceding bus state and remains asserted in this state
A system uses a watchdog timer to terminate accesses to unused address space. The
timer asserts BERR after timeout (case 3).
A system uses error detection on random-access memory (RAM) contents. The system
designer may:
1
2
3
4
5
6
1. Delay DTACK until the data is verified. If data is invalid, return BERR and HALT
2. Delay DTACK until the data is verified. If data is invalid, return BERR at the same
3. For an MC68010, return DTACK before data verification. If data is invalid, assert
simultaneously to retry the error cycle (case 5).
time as DTACK (case 3).
BERR and HALT to retry the error cycle (case 6).
Control
DTACK
DTACK
DTACK
DTACK
DTACK
DTACK
Signal
BERR
BERR
BERR
BERR
BERR
BERR
HALT
HALT
HALT
HALT
HALT
HALT
Table 5-1.
Asserted on
Rising Edge
A/S
A/S
NA
NA
NA
NA
NA
NA
NA
NA
M68000 8-/16-/32-BIT MICROPROCESSORS USER'S MANUAL
N
A
A
X
A
A
X
A
A
of State
N+2
Freescale Semiconductor, Inc.
NA
NA
NA
NA
S
X
S
S
X
S
S
A
X
S
S
S
A
A
For More Information On This Product,
DTACK
Normal cycle terminate and continue.
Normal cycle terminate and halt.
Continue when HALT negated.
Terminate and take bus error trap.
Normal cycle terminate and continue.
Terminate and retry when HALT
removed.
Normal cycle terminate and continue.
MC68000/MC68HC000/001
Go to: www.freescale.com
EC000/MC68008 Results
,
BERR
, and
HALT
Assertion Results
Normal cycle terminate and continue.
Normal cycle terminate and halt.
Continue when HALT negated.
Terminate and take bus error trap.
Terminate and take bus error trap.
Terminate and retry when HALT
removed.
Terminate and retry when HALT
removed.
MC68010 Results
5- 31

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