Datasheet

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