
3-27
DC and Switching Characteristics
Lattice Semiconductor
LatticeXP Family Data Sheet
Flash Download Time
JTAG Port Timing Specifications
Over Recommended Operating Conditions
Figure 3-12. JTAG Port Timing Waveforms
Symbol
Parameter
Min.
Typ.
Max.
Units
tREFRESH
PROGRAMN Low-to-
High. Transition to Done
High.
LFXP3
—
1.1
1.7
ms
LFXP6
—
1.4
2.0
ms
LFXP10
—
0.9
1.5
ms
LFXP15
—
1.1
1.7
ms
LFXP20
—
1.3
1.9
ms
Symbol
Parameter
Min.
Max.
Units
fMAX
—25
MHz
tBTCP
TCK [BSCAN] clock pulse width
40
—
ns
tBTCPH
TCK [BSCAN] clock pulse width high
20
—
ns
tBTCPL
TCK [BSCAN] clock pulse width low
20
—
ns
tBTS
TCK [BSCAN] setup time
10
—
ns
tBTH
TCK [BSCAN] hold time
8
—
ns
tBTRF
TCK [BSCAN] rise/fall time
50
—
ns
tBTCO
TAP controller falling edge of clock to valid output
—
10
ns
tBTCODIS
TAP controller falling edge of clock to valid disable
—
10
ns
tBTCOEN
TAP controller falling edge of clock to valid enable
—
10
ns
tBTCRS
BSCAN test capture register setup time
8
—
ns
tBTCRH
BSCAN test capture register hold time
25
—
ns
tBUTCO
BSCAN test update register, falling edge of clock to valid output
—
25
ns
tBTUODIS
BSCAN test update register, falling edge of clock to valid disable
—
25
ns
tBTUPOEN
BSCAN test update register, falling edge of clock to valid enable
—
25
ns
Timing v.F0.11
TMS
TDI
TCK
TDO
Data to be
captured
from I/O
Data to be
driven out
to I/O
a
t
a
D
d
il
a
V
a
t
a
D
d
il
a
V
a
t
a
D
d
il
a
V
a
t
a
D
d
il
a
V
Data Captured
tBTCPH
tBTCPL
tBTCOEN
tBTCRS
tBTUPOEN
tBUTCO
tBTUODIS
tBTCRH
tBTCO
tBTCODIS
tBTS
tBTH
tBTCP