TMC2084-HT Standard Microsystems (SMSC), TMC2084-HT Datasheet - Page 71

• Manufacturer Part Number: TMC2084-HT
• Manufacturer: Standard Microsystems (SMSC)

Specifications of TMC2084-HT

• Number Of Transceivers: 1
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3V
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

Standalone Mode CircLink
Datasheet
SMSC TMC2084
Crystal oscillator
nRESET
Output Stabilization Time for Shared Pins (Tphz and Tplz)
The low level on reset input pin (nRESET) sets the high-impedance state for shared pins (PD7 - 0 and
TXD). Since each pin has either a pull-up or a pull-down resister, it stabilizes to high or low level after
sufficient time. The length of stabilization time (Tphz and Tplz) depends on the resister value connected.
Therefore, the duration of reset signal must be longer than Tphz + Tplz + setup time (30 ns).
PD7-0,
TXD
Vdd
nRESET
TM
Controller
>
Tphz (or Tplz) + 30 ns
Tphz or Tplz
→ High impedance state
DATASHEET
Oscillator startup time (Tstart)
Page 71
Vdd(min): 3.0V
>
30 ns
Vdd(max): 3.6V
V
V
IH
IL
(0.8V)
(2.2V)
V
Pull-up resister is used
V
Pull-down resister is used
IH
IL
→
(0.8 X Vdd)
(0.2 X Vdd)
>
Stable
6 X Tx
Revision 0.2 (10-23-08)
V
IL
: 0.2 X Vdd