Datasheet

Serial Communication Interface (SCI) Timing
56F8033/56F8023 Data Sheet, Rev. 6
Freescale Semiconductor 133
10.11 Serial Communication Interface (SCI) Timing
Figure 10-12 RXD Pulse Width
Figure 10-13 TXD Pulse Width
Table 10-16 SCI Timing
1
1. Parameters listed are guaranteed by design.
Characteristic Symbol Min Max Unit See Figure
Baud Rate
2
2. f
MAX
is the frequency of operation of the system clock in MHz, which is 32MHz for the 56F8033/56F8023 device.
BR
—
(f
MAX
/16) Mbps
—
RXD
3
Pulse Width
3. The RXD pin in QSCI0 is named RXD0 and the RXD pin in QSCI1 is named RXD1.
RXD
PW
0.965/BR 1.04/BR ns 10-12
TXD
4
Pulse Width
4. The TXD pin in QSCI0 is named TXD0 and the TXD pin in QSCI1 is named TXD1.
TXD
PW
0.965/BR 1.04/BR ns 10-13
LIN Slave Mode
Deviation of slave node clock from
nominal clock rate before
synchronization
F
TOL_UNSYNCH
-14 14 % —
Deviation of slave node clock relative
to the master node clock after
synchronization
F
TOL_SYNCH
-2 2 % —
Minimum break character length T
BREAK
13 — Master
node bit
periods
—
11 — Slave node
bit periods
—
RXD
PW
RXD
QSCI Receive
data pin
(Input)
TXD
PW
TXD
QSCI Receive
data pin
(Input)