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| 型号： | MSP430G2332IPW20 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 16-BIT, FLASH, RISC MICROCONTROLLER, PDSO20 |
| 封装： | GREEN, PLASTIC, TSSOP-20 |
| 文件页数： | 4/55页 |
| 文件大小： | 868K |
| 代理商： | MSP430G2332IPW20 |
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MSP430G2x32
MSP430G2x02
SLAS723D
– DECEMBER 2010 – REVISED AUGUST 2011
Peripherals
Peripherals are connected to the CPU through data, address, and control buses and can be handled using all
instructions. For complete module descriptions, see the MSP430x2xx Family User
's Guide (SLAU144).
Oscillator and System Clock
The clock system is supported by the basic clock module that includes support for a 32768-Hz watch crystal
oscillator, an internal very-low-power low-frequency oscillator and an internal digitally controlled oscillator (DCO).
The basic clock module is designed to meet the requirements of both low system cost and low power
consumption. The internal DCO provides a fast turn-on clock source and stabilizes in less than 1
s. The basic
clock module provides the following clock signals:
Auxiliary clock (ACLK), sourced either from a 32768-Hz watch crystal or the internal LF oscillator.
Main clock (MCLK), the system clock used by the CPU.
Sub-Main clock (SMCLK), the sub-system clock used by the peripheral modules.
The DCO settings to calibrate the DCO output frequency are stored in the information memory segment A.
Calibration Data Stored in Information Memory Segment A
Calibration data is stored for both the DCO and for ADC10 organized in a tag-length-value structure.
Table 9. Tags Used by the ADC Calibration Tags
NAME
ADDRESS
VALUE
DESCRIPTION
TAG_DCO_30
0x10F6
0x01
DCO frequency calibration at VCC = 3 V and TA = 30°C at calibration
TAG_ADC10_1
0x10DA
0x10
ADC10_1 calibration tag
TAG_EMPTY
-
0xFE
Identifier for empty memory areas
Table 10. Labels Used by the ADC Calibration Tags
LABEL
CONDITION AT CALIBRATION / DESCRIPTION
SIZE
ADDRESS OFFSET
CAL_ADC_25T85
INCHx = 0x1010, REF2_5 = 1, TA = 85°C
word
0x0010
CAL_ADC_25T30
INCHx = 0x1010, REF2_5 = 1, TA = 30°C
word
0x000E
CAL_ADC_25VREF_FACTOR
REF2_5 = 1, TA = 30°C, I(VREF+) = 1 mA
word
0x000C
CAL_ADC_15T85
INCHx = 0x1010, REF2_5 = 0, TA = 85°C
word
0x000A
CAL_ADC_15T30
INCHx = 0x1010, REF2_5 = 0, TA = 30°C
word
0x0008
CAL_ADC_15VREF_FACTOR
REF2_5 = 0, TA = 30°C, I(VREF+) = 0.5 mA
word
0x0006
CAL_ADC_OFFSET
External VREF = 1.5 V, f(ADC10CLK) = 5 MHz
word
0x0004
CAL_ADC_GAIN_FACTOR
External VREF = 1.5 V, f(ADC10CLK) = 5 MHz
word
0x0002
CAL_BC1_1MHz
-
byte
0x0009
CAL_DCO_1MHz
-
byte
0x00008
CAL_BC1_8MHz
-
byte
0x0007
CAL_DCO_8MHz
-
byte
0x0006
CAL_BC1_12MHz
-
byte
0x0005
CAL_DCO_12MHz
-
byte
0x0004
CAL_BC1_16MHz
-
byte
0x0003
CAL_DCO_16MHz
-
byte
0x0002
12
Copyright
2010–2011, Texas Instruments Incorporated
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