MC68306FC16B Freescale Semiconductor, MC68306FC16B Datasheet - Page 101

• Manufacturer Part Number: MC68306FC16B
• Description: IC MPU INTEGRATED 132-PQFP
• Manufacturer: Freescale Semiconductor

Specifications of MC68306FC16B

• Processor Type: M683xx 32-Bit
• Speed: 16MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 132-MQFP, 132-PQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -

x = Address bit is a don’t care, CSA bit must be 0 to allow match.
• = Address bit must match CSA bit for chip select to occur.
CSDT3–0—Chip Select DTACK Wait State Selection
MOTOROLA
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
Table 5-2 shows the entire range of address bits that must match for a chip select to
occur.
This field determines whether automatic DTACK is returned, and how many wait states
are inserted if automatic DTACK is enabled. When automatic DTACK is selected, the
write portion of a TAS indivisible cycle is the same length as a normal write cycle to the
same location. Any external DTACK generation circuit must recognize that AS remains
asserted throughout a read-write indivisible cycle, if it supports TAS.
0000 = Automatic DTACK, 0 wait states
0001 = Automatic DTACK, 1 wait state
0010 = Automatic DTACK, 2 wait states
0011 = Automatic DTACK, 3 wait states
0100 = Automatic DTACK, 4 wait states
0101 = Automatic DTACK, 5 wait states
0110 = Automatic DTACK, 6 wait states
0111 = Automatic DTACK, 7 wait states
.........
1111 = A31–A17 must match CSA31–CSA17 in chip select address match
A31
x
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
A30
x
x
•
•
•
•
•
•
•
•
•
•
•
•
•
•
A29
x
x
x
•
•
•
•
•
•
•
•
•
•
•
•
•
Freescale Semiconductor, Inc.
A28
x
x
x
x
•
•
•
•
•
•
•
•
•
•
•
•
For More Information On This Product,
Table 5-2. Chip Select Match Bits
A27
x
x
x
x
x
•
•
•
•
•
•
•
•
•
•
•
MC68306 USER'S MANUAL
Go to: www.freescale.com
A26
x
x
x
x
x
x
•
•
•
•
•
•
•
•
•
•
A25
x
x
x
x
x
x
x
•
•
•
•
•
•
•
•
•
A24
1000 = Automatic DTACK, 8 wait states
1001 = Automatic DTACK, 9 wait states
1010 = Automatic DTACK, 10 wait states
1011 = Automatic DTACK, 11 wait states
1100 = Automatic DTACK, 12 wait states
1101 = Automatic DTACK, 13 wait states
1110 = Automatic DTACK, 14 wait states
1111 = No automatic DTACK, external
x
x
x
x
x
x
x
x
•
•
•
•
•
•
•
•
A23
x
x
x
x
x
x
x
x
x
•
•
•
•
•
•
•
DTACK required
A22
x
x
x
x
x
x
x
x
x
x
•
•
•
•
•
•
A21
x
x
x
x
x
x
x
x
x
x
x
•
•
•
•
•
A20
x
x
x
x
x
x
x
x
x
x
x
x
•
•
•
•
A19
x
x
x
x
x
x
x
x
x
x
x
x
x
•
•
•
A18
x
x
x
x
x
x
x
x
x
x
x
x
x
x
•
•
A17
5- 11
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
•