XJ128 and XJ128 Plus Printhead
XJ128 Guide to Operation
Xaar Document no: D031010302 Version A
Page 34
Parameter
Symbol
Min
Typ
Max
Units
nFIRE set-up time
T0
100
ns
nFIRE active pulse width
T1
1
120
s
Print cycle time
T2
180
s
nFIRE active to READY inactive delay
T3
2.35
3.35
s
READY inactive pulse width
T4
121.5
s
READY active pulse width
T5
58.5
s
READY inactive to nSS2 asserted
T6
250
s
nSS Data active valid time
T7
32
s
nSS non active switch time
T8
250
ns
nSS asserted to SCK set-up time
T9
250
ns
SCK to nSS hold time
T10
250
ns
SCK cycle time
T11
0.5
2
s
MOSI data set-up time to SCK
T12
100
ns
MOSI data hold time from SCK
T13
100
ns
nSS asserted to MISO valid delay time
T14
120
ns
SCK to MISO valid delay time
T15
240
ns
nSS negated to MISO tri-state delay time
T16
240
ns
PHO valid to CLK set-up time
T17
100
ns
PHO valid to nFIRE asserted
T18
0
ns
CLK to nFIRE hold time
T19
10
ns
CLK to PHO hold time
T20
10
ns
CLK to READY negated delay time
T21
240
ns
CLK to READY asserted delay time
T22
240
ns
nRESET pulse width
T23
500
ns
Table 6.12
–
Timing details for XJ128 data signals and control
Symbol
Condition
Min
Max
Unit
IDD
-
1.0
mA
VIH
SCK max 2MHz
0.9 * VDD
-
V
VIL
SCK max 2MHz
-
0.1 * VDD
V
VIH
SCK max 1MHz
0.8 * VDD
-
V
VIL
SCK max 1MHz
-
0.2 * VDD
V
VOH
MISO, READY, nFAULT, Iload = max 4mA, VDD = 4.5V
3.8
-
V
VOL
MISO, READY, nFAULT, Iload = max 4mA, VDD = 4.5V
-
0.4
V
Table 6.13
–
Recommended electrical operating conditions
