4 ______________________________________________________________________________________

6-Channel, Flash-Configurable System Manager

with Nonvolatile Fault Registers

ELECTRICAL CHARACTERISTICS (continued)

supply rail.

Note 4: Applies to RESET (except for a reset timeout period of 25Fs), fault, autoretry, sequence delays, and watchdog timeout.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

SMBus TIMING

Serial Clock Frequency

400

kHz

Bus Free Time Between STOP

and START Condition

1.3

F

s

START Condition Setup Time

0.6

F

s

START Condition Hold Time

0.6

F

s

STOP Condition Setup Time

0.6

F

s

Clock Low Period

1.3

F

s

Clock High Period

0.6

F

s

Data Setup Time

100

ns

Output Fall Time

250

ns

Data Hold Time

From 50% SCL falling to SDA

change

Receive

0.15

F

s

Transmit

0.3

0.9

Pulse Width of Spike Suppressed

250

ns

SMBus Timeout

22

35

ms

JTAG INTERFACE

TDI, TMS, TCK Logic-Low Input

Voltage

Input voltage falling

0.8

V

TDI, TMS, TCK Logic-High Input

Voltage

Input voltage rising

2.0

V

TDO Logic-Output Low Voltage

0.4

V

TDO Logic-Output High Voltage

2.4

V

TDI, TMS Pullup Resistors

Pullup to DBP

30

50

65

kI

I/O Capacitance

5

pF

TCK Clock Period

1000

ns

TCK High/Low Time

50

500

ns

TCK to TMS, TDI Setup Time

15

ns

TCK to TMS, TDI Hold Time

15

ns

TCK to TDO Delay

500

ns

TCK to TDO High-Z Delay

500

ns