Texas Instruments MSP430G2231, User Manual

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MSP430G2231-Q1
www.ti.com SLAS787B – NOVEMBER 2011 – REVISED MARCH 2014
Table of Contents
9.18 Crystal Oscillator, Xt1, Low-Frequency Mode ..... 25
1 Features ................................................................. 1
9.19 Internal Very-Low-Power Low-Frequency Oscillator
2 Applications .......................................................... 1
(VLO) ...................................................................... 25
3 Description ............................................................ 1
9.20 Timer_A ................................................................ 25
4 Functional Block Diagram ................................... 2
9.21 USI, Universal Serial Interface ............................. 26
5 Revision History ................................................... 4
9.22 Typical Characteristics – USI Low-Level Output
6 Device Characteristics ......................................... 4
Voltage On SDA and SCL ...................................... 26
9.23 10-Bit ADC, Power Supply and Input Range 7 Terminal Configuration and Functions ............... 5
Conditions ............................................................... 27
7.1 14-Pin PW Package (Top View) .............................. 5
9.24 10-Bit ADC, Built-In Voltage Reference ............... 28
7.2 16-Pin RSA Package (Top View) ............................. 5
9.25 10-Bit ADC, External Reference .......................... 29
7.3 Terminal Functions .................................................. 6
9.26 10-Bit ADC, Timing Parameters ........................... 29
8 Detailed Description ............................................. 7
9.27 10-Bit ADC, Linearity Parameters ........................ 29
8.1 CPU .......................................................................... 7
9.28 10-Bit ADC, Temperature Sensor and Built-In V
MID
8.2 Instruction Set .......................................................... 7
................................................................................. 30
8.3 Operating Modes ..................................................... 8
9.29 Flash Memory ...................................................... 30
8.4 Interrupt Vector Addresses ...................................... 9
9.30 RAM ..................................................................... 31
8.5 Special Function Registers (SFRs) ........................ 10
9.31 JTAG and Spy-Bi-Wire Interface .......................... 31
8.6 Memory Organization ............................................. 11
9.32 JTAG Fuse ........................................................... 31
8.7 Flash Memory ........................................................ 11
10 I/O Port Schematics ........................................... 32
8.8 Peripherals ............................................................. 12
10.1 Port P1 Pin Schematic: P1.0 To P1.2, Input/Output
9 Specifications ...................................................... 16
With Schmitt Trigger ............................................... 32
9.1 Absolute Maximum Ratings ................................... 16
10.2 Port P1 Pin Schematic: P1.3, Input/Output With
9.2 Recommended Operating Conditions .................... 16
Schmitt Trigger ........................................................ 34
9.3 Active Mode Supply Current Into V
CC
Excluding
10.3 Port P1 Pin Schematic: P1.4, Input/Output With
External Current ...................................................... 17
Schmitt Trigger ........................................................ 35
9.4 Typical Characteristics – Active Mode Supply Current
10.4 Port P1 Pin Schematic: P1.5, Input/Output With
(Into V
CC
) ................................................................ 17
Schmitt Trigger ........................................................ 36
9.5 Low-Power Mode Supply Currents (Into V
CC
)
10.5 Port P1 Pin Schematic: P1.6, Input/Output With
Excluding External Current ..................................... 18
Schmitt Trigger ........................................................ 37
9.6 Typical Characteristics, Low-Power Mode Supply
10.6 Port P1 Pin Schematic: P1.7, Input/Output With
Currents .................................................................. 18
Schmitt Trigger ........................................................ 38
9.7 Schmitt-Trigger Inputs – Ports Px .......................... 19
10.7 Port P2 Pin Schematic: P2.6, Input/Output With
Schmitt Trigger ........................................................ 39
9.8 Leakage Current – Ports Px .................................. 19
10.8 Port P2 Pin Schematic: P2.7, Input/Output With
9.9 Outputs – Ports Px ................................................. 19
Schmitt Trigger ........................................................ 40
9.10 Output Frequency – Ports Px .............................. 19
11 Device and Documentation Support ................ 41
9.11 Typical Characteristics – Outputs ........................ 20
11.1 Device Support .................................................... 41
9.12 POR, BOR ........................................................... 21
11.2 Documentation Support ....................................... 43
9.13 Main DCO Characteristics ................................... 23
11.3 Community Resources ......................................... 43
9.14 DCO Frequency ................................................... 23
11.4 Trademarks .......................................................... 44
9.15 Calibrated DCO Frequencies – Tolerance ........... 24
11.5 Electrostatic Discharge Caution ........................... 44
9.16 Wakeup From Lower-Power Modes (LPM3,
LPM4) – Electrical Characteristics .......................... 24 11.6 Glossary ............................................................... 44
9.17 Typical Characteristics – DCO Clock Wakeup Time
12 Mechanical, Packaging, and Orderable
From LPM3, LPM4 .................................................. 24
Information .......................................................... 44
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