R5F2L3ACBNFP datasheet(97/848 Pages) RENESAS

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6. Voltage Detection Circuit

REJ09B0441-0010 Rev.0.10

Jul 30, 2008

Page 61 of 809

Under development Preliminary specification

Specifications in this manual are tentative and subject to change.

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

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

Figure 6.1

Block Diagram of Voltage Detection Circuit

Table 6.2

Pin Configuration of Voltage Detection Circuit

Pin Name

I/O

Function

LVCMP2

Input

Detection target voltage pin for voltage detection 2

VCA25

≥ Vdet2

Internal

reference

voltage

VCA27

VCA26

VCC

Voltage detection 1 signal

VCA13 bit

Voltage detection 2 signal

Voltage detection 0 signal

≥ Vdet1

≥ Vdet0

VCA1 register

VW1C3 bit

VW1C register

Level

selection

circuit

(16 levels)

LVCMP2

VCA24 = 1

VCA24 = 0

VCA13: Bit in VCA1 register

VCA24, VCA25, VCA26, VCA27: Bits in VCA2 register

VW1C3: Bit in VW1C register

VD1S0 to VD1S3: Bits in VD1LS register

VDSEL0, VDSEL1: Bits in OFS register

Shared with comparator A

VD1S3 to VD1S0

Level

selection

circuit

(4 levels)

VDSEL1 to VDSEL0

R5F2L3ACBNFP Datasheet(PDF) 97 Page - Renesas Technology Corp

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