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R8C/20 Datasheet(PDF) 338 Page - Renesas Technology Corp

Part # R8C/20
Description  MCU R8C FAMILY / R8C/2x SERIES
PDF  501 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

R8C/20 Datasheet(HTML) 338 Page - Renesas Technology Corp

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R8C/20 Group, R8C/21 Group
16. Clock Synchronous Serial Interface
Rev.2.00 Aug 27, 2008
Page 322 of 458
REJ09B0250-0200
16.3.1
Transfer Clock
When the MST bit in the ICCR1 register is set to 0, the transfer clock is the external clock input from the SCL
pin. When the MST bit in the ICCR1 register is set to 1, the transfer clock is the internal clock selected by the
CKS0 to CKS3 bits in the ICCR1 register and the transfer clock is output from the SCL pin.
Table 16.6 lists the Transfer Rate Examples.
Table 16.6
Transfer Rate Examples
ICCR1 Register
Transfer
Clock
Transfer Rate
CKS3 CKS2 CKS1 CKS0
f1 = 5 MHz
f1 = 8 MHz f1 = 10 MHz f1 = 16 MHz f1 = 20 MHz
0
0
0
0
f1/28
179 kHz
286 kHz
357 kHz
571 kHz
714 kHz
1
f1/40
125 kHz
200 kHz
250 kHz
400 kHz
500 kHz
1
0
f1/48
104 kHz
167 kHz
208 kHz
333 kHz
417 kHz
1
f1/64
78.1 kHz
125 kHz
156 kHz
250 kHz
313 kHz
1
0
0
f1/80
62.5 kHz
100 kHz
125 kHz
200 kHz
250 kHz
1
f1/100
50.0 kHz
80.0 kHz
100 kHz
160 kHz
200 kHz
1
0
f1/112
44.6 kHz
71.4 kHz
89.3 kHz
143 kHz
179 kHz
1
f1/128
39.1 kHz
62.5 kHz
78.1 kHz
125 kHz
156 kHz
1
0
0
0
f1/56
89.3 kHz
143 kHz
179 kHz
286 kHz
357 kHz
1
f1/80
62.5 kHz
100 kHz
125 kHz
200 kHz
250 kHz
1
0
f1/96
52.1 kHz
83.3 kHz
104 kHz
167 kHz
208 kHz
1
f1/128
39.1 kHz
62.5 kHz
78.1 kHz
125 kHz
156 kHz
1
0
0
f1/160
31.3 kHz
50.0 kHz
62.5 kHz
100 kHz
125 kHz
1
f1/200
25.0 kHz
40.0 kHz
50.0 kHz
80.0 kHz
100 kHz
1
0
f1/224
22.3 kHz
35.7 kHz
44.6 kHz
71.4 kHz
89.3 kHz
1
f1/256
19.5 kHz
31.3 kHz
39.1 kHz
62.5 kHz
78.1 kHz



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