R8CSLASH2G datasheet(68/344 Pages) RENESAS

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R8C/2G Group

7. Comparator

Rev.1.00

Apr 04, 2008

Page 48 of 318

REJ09B0387-0100

7.2

Figures 7.2 to 7.11 show the registers associated with the comparator when comparator 1 or comparator 2 is selected.

Figure 7.2

Registers BGRTRMA and BGRTRMB

BGR Trimming Auxiliary Register A

Symbol

Address

After Reset

BGRTRMA

002Eh

When Shipping

Function

Stores data for internal reference voltage (Vref) correction w hen VCC = 3.6 to 5.5 V. (The

value is the same as that of the BGRTRM register after a reset).

Optimal correction to match the voltage conditions can be achieved by transferring this value

to the BGRTRM register.

b3 b2 b1 b0

b7 b6 b5 b4

BGR Trimming Auxiliary Register B

Symbol

Address

After Reset

BGRTRMB

002Fh

When Shipping

Function

Stores data for internal reference voltage (Vref) correction w hen VCC = 2.2 to 3.6 V.

Optimal correction to match the voltage conditions can be achieved by transferring this value

to the BGRTRM register.

b3 b2 b1 b0

b7 b6 b5 b4

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