MC9S08EL32 Datasheet, PDF (220/356 Pages) Freescale Semiconductor, Inc – 8-Bit HCS08 Central Processor Unit (CPU)

Table 12-13. Maximum LIN Bit Rates for High-Speed Operation Due to Digital Receive Filter
SLIC
Clock
(MHz)
20
18
16
14
12
10
8
6
4
2
Maximum LIN
Bit Rate for ±1.5%
SLIC Accuracy
(for Master-Slave
Communication
(kbps)
DIGITAL RX FILTER
NOT CONSIDERED
300
270
240
210
180
150
120
90
60
30
RXFP Prescaler Values (See Table 12-11)
÷8
÷7
÷6
÷÷5
÷÷4
÷÷3
(Note 1) (Note 1) (Note 1) (Note 1) (Note 1) (Note 1)
Maximum LIN Bit Rate (kbps)¹
120.00
120.00
120.00
109.38
93.75
78.13
62.50
46.88
31.25
15.63
120.00
120.00
120.00
120.00
107.14
89.29
71.43
53.57
35.71
17.86
120.00
120.00
120.00
120.00
120.00
104.17
83.33
62.50
41.67
20.83
120.00
120.00
120.00
120.00
120.00
120.00
100.00
75.00
50.00
25.00
120.00
120.00
120.00
120.00
120.00
120.00
120.00
93.75
62.50
31.25
120.00
120.00
120.00
120.00
120.00
120.00
120.00
120.00
83.33
41.67
÷÷2
120.00
120.00
120.00
120.00
120.00
120.00
120.00
120.00
120.00
62.50
÷÷1
120.00
120.00
120.00
120.00
120.00
120.00
120.00
120.00
120.00
120.00
1 _{Bit rates over 120,000 bits per second are not recommended for LIN communications, as physical layer delay between the TX}
and RX pins can cause the stop bit of a byte to be mis-sampled as the last data bit. This could result in a byte framing error.
SLIC
clock
(MHz)
20
18
16
14
12
10
8
6
4
Table 12-14. Digital Receive Filter Absolute Cutoff (Ideal Conditions)¹
Max Bit
Rate
(kbps)
Min Pulse
Width
Allowed
(μs)
RXFP = ÷8
156,250
6.40
140,625
7.11
125,000
8.00
109,375
9.14
93,750
10.67
78,125
12.80
62,500
16.00
46,875
21.33
31,250
32.00
Max Bit
Rate
(kbps)
Min Pulse
Width
Allowed
(μs)
RXFP = ÷7
178,571
5.60
160,714
6.22
142,857
7.00
125,000
8.00
107,143
9.33
89,286
11.20
71,429
14.00
53,571
18.67
35,714
28.00
Max Bit
Rate
(kbps)
Min Pulse
Width
Allowed
(μs)
RXFP = ÷6
208,333
4.80
187,500
5.33
166,667
6.00
145,833
6.86
125,000
8.00
104,167
9.60
83,333
12.00
62,500
16.00
41,667
24.00
Max Bit
Rate
(kbps)
Min Pulse
Width
Allowed
(μs)
RXFP = ÷5
250,000
4.00
225,000
4.44
200,000
5.00
175,000
5.71
150,000
6.67
125,000
8.00
100,000
10.00
75,000
13.33
50,000
20.00
MC9S08EL32 Series and MC9S08SL16 Series Data Sheet, Rev. 3
222
Freescale Semiconductor