MC68306EH16B Freescale Semiconductor, MC68306EH16B Datasheet - Page 50
![IC MPU INTEGRATED 16MHZ 132-PQFP](/photos/39/60/396092/4533518_sml.jpg)
MC68306EH16B
Manufacturer Part Number
MC68306EH16B
Description
IC MPU INTEGRATED 16MHZ 132-PQFP
Manufacturer
Freescale Semiconductor
Specifications of MC68306EH16B
Processor Type
M683xx 32-Bit
Speed
16MHz
Voltage
5V
Mounting Type
Surface Mount
Package / Case
132-MQFP, 132-PQFP
Controller Family/series
68K
Core Size
32 Bit
Cpu Speed
16.7MHz
No. Of Timers
1
Embedded Interface Type
UART
Digital Ic Case Style
PQFP
Supply Voltage Range
4.75V To 5.25V
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
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DATEL
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MC68306EH16B
Manufacturer:
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MC68306EH16BR2
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When a bus request is made after the MPU has begun a bus cycle and before AS has
been asserted (S0), the special sequence shown in Figure 3-20 applies. Instead of being
asserted on the next rising edge of clock, BG is delayed until the second rising edge
following its internal assertion.
3-18
G = Bus Grant
R = Bus Request Internal
A = Bus Grant Acknowledge Internal
T = Three-state Control to Bus Control Logic
X = Don't Care
Figure 3-17. Bus Arbitration Unit State Diagrams
RA
X
STATE 2
GT
R
XX
STATE 1
GT
Freescale Semiconductor, Inc.
GT
For More Information On This Product,
GT
(a) 3-Wire Bus Arbitration
(b) 2-Wire Bus Arbitration
RA
XA
RA
R
RA
MC68306 USER'S MANUAL
R
1
Go to: www.freescale.com
RA
STATE 3
STATE 0
R
GT
GT
GT
RA
GT
GT
RA
RA
R
RA
RA
R+A
XA
X
XX
R
1
STATE 4
GT
GT
GT
Notes:
RX
1. State machine will not change if
2. The address bus will be placed in
the bus is S0 or S1. Refer to
BUS ARBITRATION CONTROL.
the high-impedance state if T is
asserted and AS is negated.
RA
MOTOROLA
5.2.3.
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