TMP89FS60 datasheet(96/410 Pages) TOSHIBA

96 / 410 page

Page 82

7. Voltage Detection Circuit

7.3 Function

TMP89FS60

RA002

Note 1: VDCR1 is initialized by a power-on reset or an external reset input.

Note 2: When VD2F or VD1F is cleared by the software and is set due to voltage detection at the same time, the setting due to

voltage detection is given priority.

Note 3: VD2F and VD1F cannot be programmed to "1" by the software.

Note 1: VDCR2 is initialized by a power-on reset or an external reset input.

Note 2: Bits 7 and 6 of VDCR2 are read as "0".

7.3

Function

Two detection voltages (VDxLVL, x=1-2) can be set in the voltage detection circuit. For each voltage, enabling/

disabling the voltage detection and the operation to be executed when the supply voltage (VDD) becomes lower than

the detection voltage (VDxLVL) can be programmed.

VD2F

Voltage detection 2 flag (Retains

the state when VDD<VD2LVL is

detected)

0 : VDD

≥ VD2LVL

1 : VDD < VD2LVL

VD2SF

Voltage detection 2 status flag

(Magnitude relation of VDD and

VD2LVL when they are read)

0 : VDD

≥ VD2LVL

1 : VDD < VD2LVL

VD2LVL

Selection for detection voltage 2

00 : 3.70 +0.2 / -0.2V

01 : 3.15 +0.15 / -0.15V

10 : 2.85 +0.15 / -0.15V

11 : Reserved

VD1F

Voltage detection 1 flag (Retains

the state when VDD<VD1LVL is

detected)

0 : VDD

≥ VD1LVL

1 : VDD < VD1LVL

VD1SF

Voltage detection 1 status flag

(Magnitude relation of VDD and

VD1LVL when they are read)

0 : VDD

≥ VD1LVL

1 : VDD < VD1LVL

VD1LVL

Selection for detection voltage 1

00 : 4.50 +0.2 / -0.2V

01 : 4.20 +0.2 / -0.2V

10 : 3.70 +0.2 / -0.2V

11 : 3.15 +0.15 / -0.15V

Voltage detection control register 2

VDCR2

(0x0FC7)

76543

210

Bit Symbol

SRSS

VD2MOD

VD2EN

VD1MOD

VD1EN

Read/Write

R/W

After reset

00000

000

SRSS

Selection for the STOP mode

release source

00:

01:

10:

11:

Release STOP mode depending on the state of the STOP pin

Release STOP mode when the supply voltage (VDD) becomes higher

than the detection voltage (VDxLVL)

Release STOP mode depending on the state of the STOP pin or when the

supply voltage (VDD) becomes higher than the detection voltage (VDx-

LVL)

Reserved

VD2MOD

Selects the operation mode of volt-

age detection 2

Generate a voltage detection interrupt request signal

Generate a voltage detection reset 2 signal

VD2EN

Enables/disables the operation of

voltage detection 2

Disables the operation of voltage detection 2

Enables the operation of voltage detection 2

VD1MOD

Selects the operation mode of volt-

age detection 1

Generates a voltage detection interrupt request signal

Generates a voltage detection reset signal

VD1EN

Enables/disables the operation of

voltage detection 1

Disables the operation of voltage detection 1

Enables the operation of voltage detection 1

TMP89FS60 Datasheet(PDF) 96 Page - Toshiba Semiconductor

TMP89FS60 Datasheet(HTML) 96 Page - Toshiba Semiconductor

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