3-25
DC and Switching Characteristics
Lattice Semiconductor LatticeECP/EC Family Data Sheet
JTAG Port Timing Specifications
Over Recommended Operating Conditions
Rev F 0.17
Symbol Parameter Min. Max. Units
f
MAX
TCK Clock Frequency - 25 MHz
t
BTCP
TCK [BSCAN] clock pulse width 40 - ns
t
BTCPH
TCK [BSCAN] clock pulse width high 20 - ns
t
BTCPL
TCK [BSCAN] clock pulse width low 20 - ns
t
BTS
TCK [BSCAN] setup time 8 - ns
t
BTH
TCK [BSCAN] hold time 10 - ns
t
BTRF
TCK [BSCAN] rise/fall time 50 - mV/ns
t
BTCO
TAP controller falling edge of clock to valid output - 10 ns
t
BTCODIS
TAP controller falling edge of clock to valid disable - 10 ns
t
BTCOEN
TAP controller falling edge of clock to valid enable - 10 ns
t
BTCRS
BSCAN test capture register setup time 8 - ns
t
BTCRH
BSCAN test capture register hold time 25 - ns
t
BUTCO
BSCAN test update register, falling edge of clock to valid output - 25 ns
t
BTUODIS
BSCAN test update register, falling edge of clock to valid disable - 25 ns
t
BTUPOEN
BSCAN test update register, falling edge of clock to valid enable - 25 ns
