DSP56800FMD MOTOROLA [Motorola, Inc], DSP56800FMD Datasheet - Page 35

• Manufacturer Part Number: DSP56800FMD
• Description: Preliminary Technical Data DSP56F826 16-bit Digital Signal Processor
• Manufacturer: MOTOROLA [Motorola, Inc]

Operating Conditions:
3.9 Quad Timer Timing
3.10 Serial Communication Interface (SCI) Timing
Operating Conditions:
Timer input period
Timer input high/low period
Timer output period
Timer output high/low period
Baud Rate
RXD
TXD
Timer Inputs
Timer Outputs
1.
2.
1.
2.
3.
4.
3
2
Pulse Width
Pulse Width
Parameters listed are guaranteed by design.
f
The RXD pin in SCI0 is named RXD0 and the RXD pin in SCI1 is named RXD1.
The TXD pin in SCI0 is named TXD0 and the TXD pin in SCI1 is named TXD1.
Parameters listed are guaranteed by design.
In the formulas listed, T = clock cycle. For 80MHz operation, T = 12.5 ns.
MAX
1
is the frequency of operation of the system clock in MHz.
Characteristic
V
V
SSIO
SSIO
Characteristic
=V
=V
SS
SS
= V
= V
P
P
IN
OUT
SSA
SSA
= 0 V, V
= 0 V, V
DSP56F826 Preliminary Technical Data
Figure 23. Quad Timer Timing
Table 17. Timer Timing
DDIO
DDIO
Table 18. SCI Timing
=3.0 to 3.6V, V
=3.0 to 3.6V, V
RXD
Symbol
TXD
BR
PW
PW
DD
DD
= V
= V
P
DDA
DDA
Symbol
P
OUTHL
P
P
OUTHL
P
0.965/BR
0.965/BR
P
INHL
OUT
INHL
= 2.25–2.75 V, T
= 2.25–2.75 V, T
IN
Min
—
4
1, 2
P
P
INHL
OUTHL
4T+6
2T+3
2T-3
1T-3
Min
A
A
= –40 to +85 C, C
= –40 to +85 C, C
(f
MAX
1.04/BR
1.04/BR
Max
*2.5)/(80)
Max
—
—
—
—
Quad Timer Timing
L
L
50 pF, f
50 pF, f
op
op
Mbps
Unit
Unit
ns
ns
= 80 MHz
= 80 MHz
ns
ns
ns
ns
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