Datasheet
Table Of Contents
- 1 Hardware Description
- 1.1 Hardware Overview
- 1.2 Analog Front End (AFE)
- 1.3 Digital Computation Engine (CE)
- 1.4 80515 MPU Core
- 1.4.1 Memory Organization and Addressing
- 1.4.2 Special Function Registers (SFRs)
- 1.4.3 Generic 80515 Special Function Registers
- 1.4.4 Special Function Registers (SFRs) Specific to the 71M6531D/F and 71M6532D/F
- 1.4.5 Instruction Set
- 1.4.6 UARTs
- 1.4.7 Timers and Counters
- 1.4.8 WD Timer (Software Watchdog Timer)
- 1.4.9 Interrupts
- 1.5 On-Chip Resources
- 1.5.1 Oscillator
- 1.5.2 Internal Clocks
- 1.5.3 Real-Time Clock (RTC)
- 1.5.4 Temperature Sensor
- 1.5.5 Physical Memory
- 1.5.6 Optical Interface
- 1.5.7 Digital I/O – 71M6531D/F
- 1.5.8 Digital I/O – 71M6532D/F
- 1.5.9 Digital IO – Common Characteristics for 71M6531D/F and 71M6532D/F
- 1.5.10 LCD Drivers – 71M6531D/F
- 1.5.11 LCD Drivers – 71M6532D/F
- 1.5.12 LCD Drivers – Common Characteristics for 71M6531D/F and 71M6532D/F
- 1.5.13 Battery Monitor
- 1.5.14 EEPROM Interface
- 1.5.15 SPI Slave Port
- 1.5.16 Hardware Watchdog Timer
- 1.5.17 Test Ports (TMUXOUT pin)
- 2 Functional Description
- 3 Application Information
- 3.1 Connection of Sensors
- 3.2 Connecting 5-V Devices
- 3.3 Temperature Measurement
- 3.4 Temperature Compensation
- 3.5 Connecting LCDs
- 3.6 Connecting I2C EEPROMs
- 3.7 Connecting Three-Wire EEPROMs
- 3.8 UART0 (TX/RX)
- 3.9 Optical Interface (UART1)
- 3.10 Connecting the V1 Pin
- 3.11 Connecting the Reset Pin
- 3.12 Connecting the Emulator Port Pins
- 3.13 Connecting a Battery
- 3.14 Flash Programming
- 3.15 MPU Firmware
- 3.16 Crystal Oscillator
- 3.17 Meter Calibration
- 4 Firmware Interface
- 4.1 I/O RAM and SFR Map – Functional Order
- 4.2 I/O RAM Description – Alphabetical Order
- 4.3 CE Interface Description
- 5 Electrical Specifications
- 5.1 Absolute Maximum Ratings
- 5.2 Recommended External Components
- 5.3 Recommended Operating Conditions
- 5.4 Performance Specifications
- 5.4.1 Input Logic Levels
- 5.4.2 Output Logic Levels
- 5.4.3 Power-Fault Comparator
- 5.4.4 Battery Monitor
- 5.4.5 Supply Current
- 5.4.6 V3P3D Switch
- 5.4.7 2.5 V Voltage Regulator
- 5.4.8 Low-Power Voltage Regulator
- 5.4.9 Crystal Oscillator
- 5.4.10 LCD DAC
- 5.4.11 LCD Drivers
- 5.4.12 Optical Interface
- 5.4.13 Temperature Sensor
- 5.4.14 VREF
- 5.4.15 ADC Converter, V3P3A Referenced
- 5.5 Timing Specifications
- 5.6 Typical Performance Data
- 5.7 71M6531D/F Package
- 5.8 71M6532D/F Package
- 5.9 Pin Descriptions
- 6 Ordering Information
- 7 Related Information
- 8 Contact Information
- Appendix A: Acronyms
- Appendix B: Revision History
![](/manual/maxim-integrated/71m6531f-im-f/datasheet-english/images/img-7.png)
FDS 6531/6532 005 Data Sheet 71M6531D/F-71M6532D/F
Rev 2 7
Table 53: I/O RAM Map in Functional Order............................................................................................... 72
Table 54: I/O RAM Description - Alphabetical ............................................................................................ 77
Table 55: CE EQU[2:0] Equations and Element Input Mapping ................................................................. 89
Table 56: CESTATUS (CE RAM 0x80) Bit Definitions .................................................................................. 90
Table 57: CECONFIG Bit Definitions ........................................................................................................... 91
Table 58: Sag Threshold Control ................................................................................................................ 91
Table 59: Gain Adjust Control ..................................................................................................................... 91
Table 60: CE Transfer Variables ................................................................................................................. 92
Table 61: CE Energy Measurement Variables............................................................................................ 92
Table 62: Useful CE Measurement Parameters ......................................................................................... 93
Table 63: CE Pulse Generation Parameters ............................................................................................... 94
Table 64: CE Calibration Parameters ......................................................................................................... 94
Table 65: CE Parameters for Noise Suppression and Code Version ......................................................... 95
Table 66: Absolute Maximum Ratings ........................................................................................................ 98
Table 67: Recommended External Components ........................................................................................ 99
Table 68: Recommended Operating Conditions ......................................................................................... 99
Table 69: Input Logic Levels ..................................................................................................................... 100
Table 70: Output Logic Levels .................................................................................................................. 100
Table 71: Power-Fault Comparator Performance Specifications............................................................. 100
Table 72: Battery Monitor Performance Specifications (BME= 1) ............................................................. 100
Table 73: Supply Current Performance Specifications ............................................................................. 101
Table 74: V3P3D Switch Performance Specifications .............................................................................. 101
Table 75: 2.5 V Voltage Regulator Performance Specifications ............................................................... 101
Table 76: Low-Power Voltage Regulator Performance Specifications ..................................................... 101
Table 77: Crystal Oscillator Performance Specifications .......................................................................... 102
Table 78: LCD DAC Performance Specifications ..................................................................................... 102
Table 79: LCD Driver Performance Specifications ................................................................................... 102
Table 80: Optical Interface Performance Specifications ........................................................................... 102
Table 81: Temperature Sensor Performance Specifications .................................................................... 103
Table 82: VREF Performance Specifications ............................................................................................ 103
Table 83: ADC Converter Performance Specifications ............................................................................. 104
Table 84: Flash Memory Timing Specifications ........................................................................................ 106
Table 85: EEPROM Interface Timing ........................................................................................................ 106
Table 86: RESET Timing .......................................................................................................................... 106
Table 87: SPI Slave Port (MISSION Mode) Timing .................................................................................. 107
Table 88: Recommended PCB Land Pattern Dimensions ........................................................................ 111
Table 89: Power and Ground Pins ............................................................................................................ 114
Table 90: Analog Pins ............................................................................................................................... 114
Table 91: Digital Pins ................................................................................................................................ 115