Datasheet

Serial Communication Interface (SCI) Timing
56F826 Technical Data, Rev. 14
Freescale Semiconductor 45
Figure 3-26 Quad Timer Timing
3.12 Serial Communication Interface (SCI) Timing
Figure 3-27 RXD Pulse Width
Table 3-16 SCI Timing
4
Operating Conditions: V
SSIO
=V
SS
= V
SSA
= 0V, V
DDA
=V
DDIO
=3.0–3.6V, V
DD
= 2.25–2.75V, T
A
= –40° to +85°C, C
L
≤ 50pF, f
op
= 80MHz
Characteristic Symbol Min Max Unit
Baud Rate
1
1. f
MAX
is the frequency of operation of the system clock in MHz.
BR — (f
MAX
*2.5)/(80) Mbps
RXD
2
Pulse Width
2. The RXD pin in SCI0 is named RXD0 and the RXD pin in SCI1 is named RXD1.
RXD
PW
0.965/BR 1.04/BR ns
TXD
3
Pulse Width
3. The TXD pin in SCI0 is named TXD0 and the TXD pin in SCI1 is named TXD1.
4. Parameters listed are guaranteed by design.
TXD
PW
0.965/BR 1.04/BR ns
Timer Inputs
Timer Outputs
P
IN
P
INHL
P
INHL
P
OUT
P
OUTHL
P
OUTHL
RXD
SCI receive
data pin
(Input)
RXD
PW