Figure 7-3 1W UART Mode
1W UART
Tmls
Tacq
8bits MSB
8bits LSB
Twu
Tbr
Tsb
Tstop
Tstar t
Table 7-3 1W UART Timing
Symbol
Parameter
Wake level
min
30
max
5,000
210
Notes
Units
µs
Twu
Tbr
-
-
-
-
-
Baud set pulse
Baud end level
Baud rate range
104
30
µs
Tsb
5,000
9,600
2
µs
4,800
Baud rate match accuracy
Acquisition time
%
ms
Tacq
-
400
Depends on Cs and Cx
-
Tstart
Start pulse
Stop pulse
Tbr
Tbr
Tstop
-
-
Tmls
MSB
MSB-LSB spacing
-
8
850
µs
µs
8 x Tbr
8 x Tbr
8 bits data, LSB first
LSB
Description
Mode
-
µs
Table 7-4 Setups summary chart
Symbol
Valid Values
Default
Calculation / Notes
Unit
0
1
1W UART
Master Clock
Idle Low
3
Master Clock
Idle High
2
3
4
SM
Slave Clock
Idle Low
-
-
Slave Clock
Idle Low
Slave Clock
Idle High
Clock Speed
SCD
MLS
0 - 255
0 - 255
55
Tscd = (30 + (SCD x 8))/1.2
Tmls = (10 + (MLS x 4))/1.2
µs
µs
MSB-LSB
Spacing
148
LQ
10
QT300 R1.02/0204
QUANTUM [ QUANTUM RESEARCH GROUP ]
