Table 19-16 – Motorola MC68VZ328 User Manual
Page 347
AC Electrical Characteristics
Electrical Characteristics
19-31
Table 19-16. Timing Parameters for Figure 19-15 Through Figure 19-26
Number
Characteristic
(3.0 ± 0.3) V
Unit
Minimum
Maximum
1
Clock high pulse time
12
—
ns
2
Clock low pulse time
13
—
ns
3
Clock high to address valid
3
13
ns
4
Clock high to chip-select
3
12
ns
5
Read to data sample latency
CAS latency
—
CLK
6
Clock high to CAS asserted
3
12
ns
7
Clock high to SCKEN asserted
8
12
ns
8
Clock high to RAS asserted
3
12
ns
9
Self-refresh exit to active command asserted
4 (7)*
—
CLK
10
Clock high to WE asserted
3
12
ns
11
Precharge command to active command
1 (2)**
—
CLK
12
Clock high to DQM asserted
3
12
ns
13
DQM width asserted
28
—
ns
14
Clock high to DTACK asserted
10
—
ns
15
Active command to read/write command
1 (2)**
—
CLK
16
Data setup time
13
—
ns
17
Data valid to clock high
10
—
ns
* Note: The value inside the parentheses is used if the value of bit RACL of the SDRAM control register is 1.
** Note: The value inside the parentheses is used if the value of bit CL of the SDRAM control register is 1.