Z8FMC04100 ZILOG [Zilog, Inc.], Z8FMC04100 Datasheet - Page 296

• Manufacturer Part Number: Z8FMC04100
• Description: Z8 Encore-R Motor Control Flash MCUs
• Manufacturer: ZILOG [Zilog, Inc.]

274
Z8 Encore!
Product Specification
Electrical Characteristics
(Output)
(Output)
(Input)
CTS
TxD
DE
UART Timing
®
Motor Control Flash MCUs
Figure 54 and Table 152 provide timing information for UART pins for the case where the
Clear To Send input pin (CTS) is used for flow control. In this example, it is assumed that
the Driver Enable polarity has been configured to be Active Low and is represented here
by DE. The CTS to DE assertion delay (T1) assumes the UART Transmit Data Register
has been loaded with data prior to CTS assertion.
Table 152. UART Timing with CTS
Parameter
T
T
T
1
2
3
T1
Abbreviation
CTS fall to DE assertion delay
DE assertion to TxD falling edge (start)
delay
End of stop bit(s) to DE deassertion delay
T2
Figure 54. UART Timing with CTS
Start
P R E L I M I N A R Y
Bit 0
Bit 1
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Bit 7
2 x X
1 x X
1 bit period
Minimum
Parity
IN
IN
period
period
Delay (ns)
Stop
Stop Bit(s)
End of
2 x X
1 x X
2 x X
+ 1 bit period
1 bit period +
PS024604-1005
Maximum
T3
IN
IN
IN
period
period
period