R5F2L3ACBNFP datasheet(171/848 Pages) RENESAS

171 / 848 page

REJ09B0441-0010 Rev.0.10

Jul 30, 2008

Page 135 of 809

Under development Preliminary specification

Specifications in this manual are tentative and subject to change.

9. Clock Generation Circuit

R8C/L35A Group, R8C/L36A Group, R8C/L38A Group, R8C/L3AA Group,

R8C/L35B Group, R8C/L36B Group, R8C/L38B Group, R8C/L3AB Group

9.2.9

High-Speed On-Chip Oscillator Control Register 4 (FRA4)

9.2.10

High-Speed On-Chip Oscillator Control Register 5 (FRA5)

9.2.11

High-Speed On-Chip Oscillator Control Register 6 (FRA6)

9.2.12

High-Speed On-Chip Oscillator Control Register 3 (FRA3)

Set the PRC0 bit in the PRCR register to 1 (write enabled) before rewriting the FRA3 register.

Address 0029h

Bit

b7b6b5

b4b3b2

b1b0

Symbol

——

———

After Reset When shipping

Bit

Function

R/W

b7-b0 36.864 MHz frequency correction data is stored.

The frequency can be adjusted by transferring this value to the FRA1 register and

by transferring the correction value of the FRA5 register to the FRA3 register.

Address 002Ah

Bit

b7b6b5

b4b3b2

b1b0

Symbol

——

———

After Reset When shipping

Bit

Function

R/W

b7-b0 36.864 MHz frequency correction data is stored.

The frequency can be adjusted by transferring this value to the FRA3 register and

by transferring the correction value of the FRA4 register to the FRA1 register.

Address 002Bh

Bit

b7b6b5

b4b3b2

b1b0

Symbol

——

———

After Reset When shipping

Bit

Function

R/W

b7-b0 32 MHz frequency correction data is stored.

The frequency can be adjusted by transferring this value to the FRA1 register and

by transferring the correction value of the FRA7 register to the FRA3 register.

Address 002Fh

Bit

b7b6b5

b4b3b2

b1b0

Symbol

——

———

After Reset When shipping

Bit

Function

R/W

b7-b0 The frequency of the high-speed on-chip oscillator can be changed by the following

settings.

40 MHz:

FRA1=FRA3=Value after a reset

36.864 MHz: Transfer the data of the FRA4 register to the FRA1 register, and transfer the

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