DSP56362AD datasheet(63/168 Pages) MOTOROLA

63 / 168 page

Specifications

External Memory Expansion Port (Port A)

MOTOROLA

DSP56362 Advance Information

2-25

132 CAS assertion to data valid (read)

tCAC

1.5

× TC − 6.5

—

12.3

133 Column address valid to data valid

(read)

tAA

2.5

× TC − 6.5

—

24.8

134 CAS deassertion to data not valid (read

hold time)

tOFF

0.0

—

135 Last CAS assertion to RAS deassertion

tRSH

1.75

× TC − 4.0

17.9

—

136 Previous CAS deassertion to RAS

deassertion

tRHCP

3.25

× TC − 4.0

36.6

—

137 CAS assertion pulse width

tCAS

1.5

× TC − 4.0

14.8

—

138

Last CAS deassertion to RAS

deassertion5

tCRP

• BRW[1:0] = 00

2.0

× TC − 6.0

19.0

—

• BRW[1:0] = 01

3.5

× TC − 6.0

37.8

—

• BRW[1:0] = 10

4.5

× TC − 6.0

50.3

—

• BRW[1:0] = 11

6.5

× TC − 6.0

75.3

—

139 CAS deassertion pulse width

tCP

1.25

× TC − 4.0

11.6

—

140 Column address valid to CAS assertion

tASC

TC − 4.0

8.5

—

141 CAS assertion to column address not

valid

tCAH

1.75

× TC − 4.0

17.9

—

142 Last column address valid to RAS

deassertion

tRAL

× TC − 4.0

33.5

—

143 WR deassertion to CAS assertion

tRCS

1.25

× TC − 3.8

11.8

—

144 CAS deassertion to WR assertion

tRCH

0.5

× TC − 3.7

2.6

—

145 CAS assertion to WR deassertion

tWCH

1.5

× TC − 4.2

14.6

—

146 WR assertion pulse width

tWP

2.5

× TC − 4.5

26.8

—

147 Last WR assertion to RAS deassertion

tRWL

2.75

× TC − 4.3

30.1

—

148 WR assertion to CAS deassertion

tCWL

2.5

× TC − 4.3

27.0

—

149 Data valid to CAS assertion (write)

tDS

0.25

× TC − 3.0

0.1

—

150 CAS assertion to data not valid (write)

tDH

1.75

× TC − 4.0

17.9

—

151 WR assertion to CAS assertion

tWCS

TC − 4.3

8.2

—

152 Last RD assertion to RAS deassertion

tROH

2.5

× TC − 4.0

27.3

—

153 RD assertion to data valid

tGA

1.75

× TC − 6.5

—

15.4

154 RD deassertion to data not valid6

tGZ

0.0

—

155 WR assertion to data active

0.75

× TC − 0.3

9.1

—

Table 2-10 DRAM Page Mode Timings, Two Wait States1, 2, 3, 7 (Continued)

No.

Characteristics

Symbol

Expression

80 MHz

Unit

Min

Max

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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