Datasheet

Serial Communication Interface (SCI) Timing
56F807 Technical Data Technical Data, Rev. 16
Freescale Semiconductor 43
3.10 Serial Communication Interface (SCI) Timing
Figure 3-25 RXD Pulse Width
Figure 3-26 TXD Pulse Width
Table 3-15 SCI Timing
4
Operating Conditions: V
SS
= V
SSA
= 0 V, V
DD
= V
DDA
= 3.0–3.6 V, 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
RXD
PW
RXD
SCI receive
data pin
(Input)
TXD
PW
TXD
SCI receive
data pin
(Input)