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7. Voltage Detection Circuit
7.3 Function
TMP89FM42
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 : 2.35 +0.15 / -0.15V
01 : 3.15 +0.15 / -0.15V
10 : 2.85
+0.15 / -0.15V
11 : 2.65 +0.15 / -0.15V
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)
7
6
5
4
3
2
1
0
Bit Symbol
-
-
SRSS
VD2MOD
VD2EN
VD1MOD
VD1EN
Read/Write
R
R
R/W
R/W
R/W
R/W
R/W
After reset
0
0
0
0
0
0
0
0
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
0:
1:
Generate a voltage detection interrupt request signal
Generate a voltage detection reset 2 signal
VD2EN
Enables/disables the operation of
voltage detection 2
0:
1:
Disables the operation of voltage detection 2
Enables the operation of voltage detection 2
VD1MOD
Selects the operation mode of volt-
age detection 1
0:
1:
Generates a voltage detection interrupt request signal
Generates a voltage detection reset signal
VD1EN
Enables/disables the operation of
voltage detection 1
0:
1:
Disables the operation of voltage detection 1
Enables the operation of voltage detection 1
Содержание TLCS-870/C1 Series
Страница 1: ...8 Bit Microcontroller TLCS 870 C1 Series TMP89FM42 查询TMP89FM42供应商 捷多邦 专业PCB打样工厂 24小时加急出货 ...
Страница 3: ...Revision History Date Revision 2007 10 25 1 First Release 2007 11 3 2 Contents Revised ...
Страница 4: ......
Страница 14: ......
Страница 18: ...1 3 Block Diagram TMP89FM42 1 3 Block Diagram Figure 1 2 Block Diagram ...
Страница 22: ...1 4 Pin Names and Functions TMP89FM42 ...
Страница 60: ...2 CPU Core 2 5 Revision History TMP89FM42 ...
Страница 76: ...3 Interrupt Control Circuit 3 8 Revision History TMP89FM42 ...
Страница 86: ...4 External Interrupt control circuit 4 3 Function TMP89FM42 ...
Страница 102: ...7 Voltage Detection Circuit 7 5 Revision History TMP89FM42 ...
Страница 126: ...8 I O Ports 8 3 I O Port Registers TMP89FM42 Note 2 i 0 to 1 ...
Страница 136: ...8 I O Ports 8 5 Revision History TMP89FM42 ...
Страница 142: ...9 Special Function Registers 9 3 SFR3 0x0E40 to 0x0EFF TMP89FM42 ...
Страница 146: ...10 Low Power Consumption Function for Peripherals TMP89FM42 ...
Страница 149: ...TMP89FM42 11 3 Revision History Rev Description RA001 Deleted SLEEP2 description ...
Страница 150: ...11 Divider Output DVO 11 3 Revision History TMP89FM42 ...
Страница 220: ...15 Real Time Clock RTC 15 4 Real Time Clock Operation TMP89FM42 ...
Страница 250: ...16 Asynchronous Serial Interface UART 16 15 Revision History TMP89FM42 ...
Страница 302: ...18 Serial Bus Interface SBI 18 7 Revision History TMP89FM42 ...
Страница 336: ...21 Flash Memory 21 4 Toggle Bit D6 TMP89FM42 Note 1 Make sure that you set the C register to 0x00 LD FLSCR2 0xD5 ...
Страница 338: ...21 Flash Memory 21 4 Toggle Bit D6 TMP89FM42 ...
Страница 384: ...22 Serial PROM Mode 22 15 Revision History TMP89FM42 ...
Страница 388: ...24 Input Output Circuit 24 1 Control Pins TMP89FM42 ...
Страница 404: ...25 Electrical Characteristics 25 11 Revision History TMP89FM42 ...
Страница 406: ...26 Package Dimensions TMP89FM42 ...
Страница 408: ......