r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 778

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

15. Clock Pulse Generator (CPG)
15.5
Table 15.7 shows the relationship between the division ratio of divider 2 described for frequency
control register FRQCR1 and frequency display register FRQMR1, and the EXTAL input.
Table 15.7 Relationship Between the Division Ratio of Divider 2 and the Frequency
Rev.1.00 Jan. 10, 2008 Page 748 of 1658
REJ09B0261-0100
Division ratio of
divider 2
× 1/2
× 1/4
× 1/6
× 1/8
× 1/12
× 1/16
× 1/18
× 1/24
× 1/32
× 1/36
× 1/48
Calculating the Frequency
Clock operating mode 0 to 3
× 36
× 18
× 12
× 9
× 6
× 9/2
× 4
× 3
× 9/4
× 2
× 3/2
Frequency (for an input clock)
Clock operating mode 16 to 19
× 18
× 9
× 6
× 9/2
× 3
× 9/4
× 2
× 3/2
× 9/8
× 1
× 3/4