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Z8F021ASH020SC 数据表(PDF) 247 Page - Zilog, Inc.

部件名 Z8F021ASH020SC
功能描述  Z8 Encore XP-R 4K Series High-Performance 8-Bit Microcontrollers
PDF  276 Pages
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制造商  ZILOG [Zilog, Inc.]
网页  http://www.zilog.com
标志 ZILOG - Zilog, Inc.

Z8F021ASH020SC 数据表(HTML) 247 Page - Zilog, Inc.

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PS022815-0206
Electrical Characteristics
Z8 Encore! XP® 4K Series
Product Specification
228
UART Timing
Figure 37 and Table 145 provide timing information for UART pins for the case where
CTS is used for flow control. The CTS to DE assertion delay (T1) assumes the transmit
data register has been loaded with data prior to CTS assertion.
Figure 37. UART Timing With CTS
Table 145. UART Timing With CTS
Parameter
Abbreviation
Delay (ns)
Minimum
Maximum
UART
T1
CTS Fall to DE output delay
2 * XIN
period
2 * XIN period
+ 1 bit time
T2
DE assertion to TXD falling edge (start bit) delay ± 5
T3
End of Stop Bit(s) to DE deassertion delay
± 5
CTS
DE
T1
(Output)
TXD
T2
(Output)
(Input)
start
bit 0
bit 1
bit 7
parity
stop
end of
stop bit(s)
T3



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