Advance Information MT88E46
AC Electrical Characteristics† - Mode 0 FSK Data Interface Timing
‡
Characteristics
Sym
Min
Typ
Max Units
Notes*
into 50pF load
See Figure 11
1
2
3
Rise time
tRR
-
-
200
200
417
ns
ns
µs
into 50pF load
See Figure 11
DR
Fall time
Low time
tRF
tRL
-
-
1.
415
416
See Figs. 11, 14, 15
4
5
Rate
1188
-
1200
1
1212 baud
2
DATA
Input FSK to DATA delay
tIDD
tR
5
ms
ns
See Figure 14
into 50pF load
See Figure 10
6
7
8
Rise time
-
-
-
200
into 50pF load
See Figure 10
Fall time
tF
-
200
ns
µs
µs
DATA
DCLK
1, 2, 3
See Figure 10
DATA to DCLK delay
tDCD
tCDD
6
6
416
416
-
-
1, 2, 3
See Figure 10
9
DCLK to DATA delay
Frequency
10
fDCLK0
tCH
1201.6 1202.8 1204
Hz
µs
µs
1. See Figure 14
11 DCLK High time
415
415
416
416
417
417
1. See Figures 10, 14
1. See Figures 10, 14
12
13
Low time
tCL
DCLK
DR
DCLK to DR delay
tCRD
415
416
417
µs
1. See Figure 14
†AC Electrical Characteristics are over recommended operating conditions, unless otherwise stated.
‡Typical figures are at 25˚C and are for design aid only: not guaranteed and not subject to production testing.
*Notes:
1.OSC1 at 3.579545 MHz 0.1%.
2.FSK input data at 1200 12 baud.
3.Function of signal condition.
AC Electrical Characteristics† - Mode 1 FSK Data Interface Timing
Characteristics
Sym
Min
Max
Units
Notes
1
2
3
4
5
Frequency
DCLK Duty cycle
Rise time
fDCLK1
-
1
70
100
-
MHz
%
See Figure 15
30
-
tR1
ns
See Figure 12
See Figure 15
See Figure 15
DCLK low set up to DR
tDDS
500
ns
DCLK
DR
DCLK low hold time after DR
tDDH
500
-
ns
†AC Electrical Characteristics are over recommended operating conditions unless otherwise stated.
AC Electrical Characteristics† - General Timing
Characteristics
Power-up time
Power-down time
Sym
Min
Max
Units
Notes
1
2
tPU
tPD
-
-
50
10
ms
ms
See Figures 16, 17
See Figure 16
OSC2
†AC Electrical Characteristics are over recommended operating conditions unless otherwise stated.
17
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