E62655RUSB Renesas Electronics America, E62655RUSB Datasheet - Page 676
E62655RUSB
Manufacturer Part Number
E62655RUSB
Description
EMULATOR BASE H8S/2655R W/USB
Manufacturer
Renesas Electronics America
Type
Microcontrollerr
Datasheet
1.E62655RUSB.pdf
(1093 pages)
Specifications of E62655RUSB
Contents
E6000 Emulator Unit and 4 Logic Probes
For Use With/related Products
H8S/2655R
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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Section 14 Serial Communication Interface (SCI)
Thus the reception margin in asynchronous mode is given by formula (1) below.
Where M: Reception margin (%)
Assuming values of F = 0 and D = 0.5 in formula (1), a reception margin of 46.875% is given by
formula (2) below.
When D = 0.5 and F = 0,
However, this is only the computed value, and a margin of 20% to 30% should be allowed in
system design.
Rev. 5.00 Sep 14, 2006 page 646 of 1060
REJ09B0331-0500
Internal basic
clock
Receive data
(RxD)
Synchronization
sampling timing
Data sampling
timing
N: Ratio of bit rate to clock (N = 16)
D: Clock duty (D = 0 to 1.0)
L: Frame length (L = 9 to 12)
F: Absolute value of clock rate deviation
M = (0.5 –
M = (0.5 –
= 46.875%
Figure 14.21 Receive Data Sampling Timing in Asynchronous Mode
0
2
2N
1
1
8 clocks
Start bit
16
) – (L – 0.5) F –
)
100%
16 clocks
7
D – 0.5
N
15 0
(1 + F)
D0
100%
. . . . . . . . Formula (1)
. . . . . . . . Formula (2)
7
15 0
D1
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