EP7211 Datasheet, PDF (134/166 Pages) Cirrus Logic – HIGH-PERFORMANCE ULTRA-LOW-POWER SYSTEM-ON-CHIP WITH LCD CONTROLLER

EP7211
High-Performance Ultra-Low-Power System-on-Chip with LCD Controller
6.4 AC Characteristics
All characteristics are specified at V_DD = 2.3 to 2.7 volts and V_SS = 0 volts over an operating
temperature of 0°C to +70°C. Those characteristics marked with a # will be significantly different
for 13 MHz mode because the EXPCLK is provided as an input rather than generated internally.
These timings are estimated at present. The timing values are referenced to 1/2 V_DD.
Table 6-2. AC Timing Characteristics
Symbol
Parameter
T1
Falling CS to data bus Hi-Z
T2
Address change to valid write data
T3
DATA in to falling EXPCLK setup time
T4
DATA in to falling EXPCLK hold time
T5
EXPRDY to falling EXPCLK setup time
T6
Falling EXPCLK to EXPRDY hold time
T7
Rising NMWE to data invalid hold time
T8
Sequential data valid to falling NMWE setup time
T9
Row address to falling NRAS setup time
T10
Falling NRAS to row address hold time
T11
Column address to falling NCAS setup time
T12
Falling NCAS to column address hold time
T13
Write data valid to falling NCAS setup time
T14
Write data valid from falling NCAS hold time
T15
LCD CL2 low time
T16
LCD CL2 high time
T17
LCD falling CL2 to rising CL1 delay
T18
LCD falling CL1 to rising CL2
T19
LCD CL1 high time
T20
LCD falling CL1 to falling CL2
T21
LCD falling CL1 to FRM toggle
T22
LCD falling CL1 to M toggle
T23
LCD rising CL2 to display data change
T24
Falling EXPCLK to address valid
13 MHz
Min
Max
0
35
0
45
0#
—
10 #
—
0#
—
10 #
50
10
—
–10
10
5
—
25
—
2
—
25
—
2
—
50
—
80
3,475
80
3,475
0
25
80
3,475
80
3,475
200
6,950
300
10,425
–10
20
–10
20
—
33 #
18/36 MHz
Min
Max
0
25
0
35
18
—
0
—
18
—
0
50
5
—
–10
10
5
—
25
—
2
—
25
—
2
—
50
—
80
3,475
80
3,475
0
25
80
3,475
80
3,475
200
6,950
300
10,425
–10
20
–10
20
—
5
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
134
Electrical Specifications
DS352PP3
JUL 2001