R8CSLASH15 datasheet(41/277 Pages) RENESAS

41 / 277 page

R8C/14 Group, R8C/15 Group

6. Voltage Detection Circuit

Rev.2.10

Jan 19, 2006

Page 29 of 253

REJ09B0164-0210

Figure 6.5

VW1C Register

Voltage Monitor 1 Circuit Control Register

(1)

Symbol

Address

After Reset(2)

VW1C

0036h

Hardw are Reset : 0000X000b

Pow er-On Reset, Voltage Monitor 1 Reset :

0100X001b

Bit Symbol

Bit Name

Function

NOTES :

b3 b2

Set to “0”.

b1 b0

b7 b6 b5 b4

VW1C0

Voltage Monitor 1 Reset Enable

Bit(3)

0 : Disable

1 : Enable

0 : Digital filter enabled mode

(digital filter circuit enabled)

1 : Digital filter disabled mode

(digital filter circuit disabled)

VW1C2

Reserved Bit

VW1C1

Voltage Monitor 1 Digital Filter

Disable Mode Select Bit

—

(b3)

Reserved Bit

VW1F1

Sampling Clock Select Bit

b5 b4

0 0 : fRING-S divide-by-1

0 1 : fRING-S divide-by-2

1 0 : fRING-S divide-by-4

1 1 : fRING-S divide-by-8

VW1F0

When read, its content is indeterminate.

VW1C6

Voltage Monitor 1 Circuit Mode

Select Bit

When the VW1C0 bit is set to “1” (enables

voltage monitor 1 reset), set to “1”.

VW1C7

Voltage Monitor 1 Reset

Generation Condition Select Bit

When the VW1C1 bit is set to “1” (digital filter

disabled mode), set to “1”.

Set the PRC3 bit in the PRCR register to “1” (w rite enable) before w riting to this register.

When rew riting the VW1C register, the VW1C2 bit may be set to “1”. Set the VW1C2 bit to “0” after rew riting the

VW1C register.

The value after reset remains unchanged in softw are reset, w atchdogi timer reset and voltage monitor 2 reset.

The VW1C0 bit is enabled w hen the VCA26 bit in the VCA2 register is set to “1” (voltage detection 1 circuit

enabled). Set the VW1C0 bit to “0” (disable), w hen the VCA26 bit is set to “0” (voltage detection 1 circuit disabled).

R8C/15 Datasheet(PDF) 41 Page - Renesas Technology Corp

R8C/15 Datasheet(HTML) 41 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL