MSP430F6736AIPN - 25MHz Metering SoC MCU 128KB Flash | TI
MPN: MSP430F6736AIPN ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.32 | $8.32 |
| 10 | $7.49 | $74.90 |
| 100 | $6.74 | $674.00 |
| 500 | $6.07 | $3,035.00 |
| 1,000 | $5.45 | $5,450.00 |
MSP430F6736AIPN Overview
A metering SoC (System-on-Chip) is a microcontroller that integrates application-specific analog front-end peripherals - in this case, three precision Sigma-Delta analog-to-digital converters - directly onto the same silicon as the CPU, memory, and display drivers. This topology eliminates the need for an external ADC chip in single-phase energy-meter products, reducing BOM cost and PCB area. The MSP430F6736AIPN sits inside TI's MSP430F6xx metering family, which extends from the broader MSP430 ultra-low-power MCU lineage into the power-measurement domain. Synonyms commonly used in the trade include 'metering MCU', 'energy-meter SoC', and 'e-meter microcontroller'.
Key differentiating features of the MSP430F6736AIPN include its 128KB of in-system programmable Flash (sufficient for storing calibration tables, metrology algorithms, and display fonts), an integrated segmented-LCD driver that eliminates external LCD bias-generation hardware, the three 24-bit Sigma-Delta ADCs which simultaneously sample voltage and current channels for class-0.2 or class-0.5 energy accuracy, and ultra-low-power modes that allow the entire meter to draw under 4 mA active while continuously metering.
Technically, the device combines a 16-bit RISC MSP430 CPUXV2 core with hardware multiplier, an embedded RTC with calendar, brown-out reset, supply-voltage supervisor, watchdog timer, and multiple timer/capture modules. The three SD24 ADCs achieve effective resolution suitable for IEC 62053-22 class-0.2 meters, and the integrated LCD driver supports up to 320 segments in 8-mux mode. The 80-pin LQFP package exposes all analog and digital pins, with the PN suffix identifying a 12x12 mm body.
Typical applications include single-phase residential electricity meters, smart-plug energy monitors, in-home display panels, sub-metering for solar inverters, and industrial power-monitoring controllers. The combination of three SD ADCs and an LCD driver makes the part a true single-chip solution for IEC-compliant class meters.
When designing with this device, place the crystal and the SD24 RC components as close to the respective pins as the layout allows, route the analog and digital grounds as separate nets joined at a single point near the IC, and follow TI's 'Single-Phase Metering with the MSP430F6736A' reference design for ADC gain calibration.
This page consolidates distributor pricing, drop-in package-matched alternatives, application notes, and design guidance that go beyond a single datasheet table, giving engineers a faster path from datasheet to working single-phase meter prototype.
Drop-in alternatives for MSP430F6736AIPN — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MSP430F6736AIPN (same form factor and footprint) — differing in Package, Operating Temperature, Supply Voltage, Core Processor, Sigma-Delta ADCs.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MSP430F6735AIPN
✅ Drop-In📋 Reference alternative (not in catalog)
MSP430F6737AIPN
✅ Drop-In📋 Reference alternative (not in catalog)
MSP430F6734AIPN
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MSP430F6733AIPN
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MSP430F6736AIPNR
✅ Drop-In✓ In Stock
$6.18 / Unit
View Datasheet →MSP430F6736AIPN Maximum Ratings & Electrical Characteristics
| Core Processor | MSP430 CPUXV2 |
| Core Size | 16-Bit |
| Maximum Clock Speed | 25 MHz |
| Program Memory Size (Flash) | 128 KB (128K x 8) |
| RAM Size | 8 KB |
| Number of Sigma-Delta ADCs | 3 (24-bit) |
| LCD Driver | Integrated, up to 320 segments |
| Real-Time Clock (RTC) | Yes, with calendar |
| Supply Voltage | 2.5 V / 3.3 V |
| Operating Temperature | -40C to +85C |
| Connectivity | I2C, IrDA, LINbus, SCI, SPI, UART/USART |
| Package | 80-LQFP (PN), 12x12 mm |
| Pin Count | 80 |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Series | MSP430F6xx |
MSP430F6736AIPN Pin Configuration
| Pin 1 | P1.0/TA0.0 — General-purpose I/O / Timer_A capture |
| Pin 2 | P1.1/TA0.1 — General-purpose I/O / Timer_A capture |
| Pin 3 | P1.2/TA0.2 — General-purpose I/O / Timer_A capture |
| Pin 4 | P1.3/TA0.3 — General-purpose I/O / Timer_A capture |
| Pin 5 | P1.4/TA0.4 — General-purpose I/O / Timer_A capture |
| Pin 6 | P1.5/TA0.5 — General-purpose I/O / Timer_A capture |
| Pin 7 | P1.6/TA0.6 — General-purpose I/O / Timer_A capture |
| Pin 8 | P1.7/TA0.7 — General-purpose I/O / Timer_A capture |
| Pin 9 | P2.0/RTCCLK — General-purpose I/O / RTC clock output |
| Pin 10 | P2.1 — General-purpose I/O |
| Pin 11 | P2.2 — General-purpose I/O |
| Pin 12 | P2.3 — General-purpose I/O |
| Pin 13 | P2.4 — General-purpose I/O |
| Pin 14 | P2.5 — General-purpose I/O |
| Pin 15 | P2.6 — General-purpose I/O |
| Pin 16 | P2.7 — General-purpose I/O |
| Pin 17 | AVCC — Analog supply voltage |
| Pin 18 | AVSS — Analog ground |
| Pin 19 | SD24_A0+ — Sigma-Delta ADC0 positive input |
| Pin 20 | SD24_A0- — Sigma-Delta ADC0 negative input |
| Pin 21 | SD24_A1+ — Sigma-Delta ADC1 positive input |
| Pin 22 | SD24_A1- — Sigma-Delta ADC1 negative input |
| Pin 23 | SD24_A2+ — Sigma-Delta ADC2 positive input |
| Pin 24 | SD24_A2- — Sigma-Delta ADC2 negative input |
| Pin 25 | VREF+ — Internal voltage reference positive |
| Pin 26 | VREF-/VeREF- — Internal/external voltage reference negative |
| Pin 27 | VCC — Digital supply voltage |
| Pin 28 | VSS — Digital ground |
| Pin 29 | XIN — 32.768 kHz crystal oscillator input |
| Pin 30 | XOUT — 32.768 kHz crystal oscillator output |
| Pin 31 | XT2IN — High-frequency crystal oscillator input |
| Pin 32 | XT2OUT — High-frequency crystal oscillator output |
| Pin 33 | TEST/SBWTCK — Test mode / Spy-Bi-Wire TCK |
| Pin 34 | RST/NMI/SBWTDIO — Reset / NMI / Spy-Bi-Wire data |
| Pin 35 | TCK — JTAG test clock |
| Pin 36 | TMS — JTAG test mode select |
| Pin 37 | TDI — JTAG test data input |
| Pin 38 | TDO — JTAG test data output |
| Pin 39 | P3.0 — General-purpose I/O |
| Pin 40 | P3.1 — General-purpose I/O |
| Pin 41 | P3.2 — General-purpose I/O |
| Pin 42 | P3.3 — General-purpose I/O |
| Pin 43 | P3.4 — General-purpose I/O |
| Pin 44 | P3.5 — General-purpose I/O |
| Pin 45 | P3.6 — General-purpose I/O |
| Pin 46 | P3.7 — General-purpose I/O |
| Pin 47 | P4.0 — General-purpose I/O |
| Pin 48 | P4.1 — General-purpose I/O |
| Pin 49 | P4.2 — General-purpose I/O |
| Pin 50 | P4.3 — General-purpose I/O |
| Pin 51 | P4.4 — General-purpose I/O |
| Pin 52 | P4.5 — General-purpose I/O |
| Pin 53 | P4.6 — General-purpose I/O |
| Pin 54 | P4.7 — General-purpose I/O |
| Pin 55 | P5.0 — General-purpose I/O |
| Pin 56 | P5.1 — General-purpose I/O |
| Pin 57 | P5.2 — General-purpose I/O |
| Pin 58 | P5.3 — General-purpose I/O |
| Pin 59 | P5.4 — General-purpose I/O |
| Pin 60 | P5.5 — General-purpose I/O |
| Pin 61 | P5.6 — General-purpose I/O |
| Pin 62 | P5.7 — General-purpose I/O |
| Pin 63 | P6.0 — General-purpose I/O |
| Pin 64 | P6.1 — General-purpose I/O |
| Pin 65 | P6.2 — General-purpose I/O |
| Pin 66 | P6.3 — General-purpose I/O |
| Pin 67 | P6.4 — General-purpose I/O |
| Pin 68 | P6.5 — General-purpose I/O |
| Pin 69 | P6.6 — General-purpose I/O |
| Pin 70 | P6.7 — General-purpose I/O |
| Pin 71 | LCDCAP — LCD charge pump external capacitor |
| Pin 72 | COM0 — LCD common line 0 |
| Pin 73 | COM1 — LCD common line 1 |
| Pin 74 | COM2 — LCD common line 2 |
| Pin 75 | COM3 — LCD common line 3 |
| Pin 76 | SEG0 — LCD segment line 0 |
| Pin 77 | SEG1 — LCD segment line 1 |
| Pin 78 | SEG2 — LCD segment line 2 |
| Pin 79 | SEG3 — LCD segment line 3 |
| Pin 80 | SEG4 — LCD segment line 4 |
Typical Applications
MSP430F6736AIPN is suitable for 6 applications: Single-Phase Residential Electricity Meter, Smart Plug Energy Monitor, Solar Inverter Sub-Meter, Industrial Power Monitoring Controller, In-Home Display Panel, EV Charging Station Energy Meter.
Single-Phase Residential Electricity Meter
The MSP430F6736AIPN is the canonical single-chip solution for IEC 62053-21 class-1 or class-2 residential meters. Its three 24-bit SD24 ADCs simultaneously sample the voltage channel and the two current channels (CT or shunt), producing true-RMS active, reactive, and apparent energy with built-in phase-error correction. The 128KB Flash holds the metrology library plus the DLMS/COSEM or IEC 62056-21 communication stack for AMI, while the integrated LCD driver drives the segmented display without external bias hardware. Compared with a discrete ADC + general MCU approach, this SoC reduces BOM by ~$1.50 and shrinks PCB area by roughly 30%.
Recommended
Smart Plug Energy Monitor
Wi-Fi or BLE smart plugs that report per-outlet energy use benefit from the MSP430F6736AIPN's three SD24 ADCs and ultra-low-power modes. The two current ADCs support either a single CT plus voltage channel or dual CTs for power-strip monitoring of multiple outlets. Active current under 4 mA keeps idle consumption low so the plug meets Energy Star standby requirements. The integrated RTC enables accurate time-of-use (TOU) tariff schedules, and the 128KB Flash comfortably holds TLS client stacks for cloud-paired smart-plug designs.
Recommended
Solar Inverter Sub-Meter
Sub-metering in single-phase solar inverters needs accurate bidirectional energy measurement, which the three 24-bit SD24 ADCs of the MSP430F6736AIPN handle natively. Channel 0 measures grid-side voltage; channels 1 and 2 measure grid current and PV current respectively, allowing net-energy calculation across a daily cycle. The wide -40C to +85C operating range suits outdoor inverter enclosures, and the LCD driver can drive a 4-digit in-home display showing instantaneous power and cumulative kWh. Compared with class-0.5 industrial ADCs, this SoC achieves IEC class-0.2 accuracy at lower cost.
Recommended
Industrial Power Monitoring Controller
Inside industrial PDUs and machine-power monitors, the MSP430F6736AIPN serves as the metering brain. Its 25 MHz MSP430 CPUXV2 core runs the metrology task plus Modbus RTU over UART, while the three SD24 ADCs simultaneously sample three-phase or multi-channel loads (single SoC handles up to three loads in single-phase systems). The wide 2.5V/3.3V supply range simplifies integration with industrial 24V-derived rails, and the integrated RTC timestamps energy logs without an external RTC chip. The 8KB RAM is sufficient for a circular event log up to several thousand entries.
Recommended
In-Home Display Panel
Companion in-home displays (IHDs) for AMI smart meters pair with the MSP430F6736AIPN to show real-time kWh, cost, and CO2 footprint. The SoC's integrated LCD driver (up to 320 segments) directly drives the segmented glass without a charge-pump IC, and its ultra-low LPM3 sleep current (~1 uA with RTC) means the display can run for years on two AA batteries. The three SD24 ADCs are repurposed for an optional local-measurement mode (e.g., plug-through reference display). Compared with an LCD-driver-less MCU plus external HT1621, this SoC saves roughly $0.80 BOM.
Recommended
EV Charging Station Energy Meter
AC Level-2 EVSEs require accurate, tamper-resistant single-phase metering, which the MSP430F6736AIPN provides with three SD24 ADCs and 128KB Flash for the OCPP 1.6/2.0.1 communication stack. The integrated RTC supports time-of-use billing aligned with utility schedules, and the wide -40C to +85C range handles outdoor cabinet thermal stress. Compared with class-0.2 industrial metering ICs (e.g., ADE7953), the MSP430F6736AIPN delivers equivalent accuracy with a 32-bit math advantage for harmonic analysis, plus full LCD support for the EVSE's user interface.
Recommended
Recommended Products Summary
Engineering reference data for MSP430F6736AIPN — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MSP430F6735AIPN | MSP430F6737AIPN | MSP430F6734AIPN | MSP430F6733AIPN | MSP430F6736AIPNR |
|---|---|---|---|---|---|---|
| Package | 80-LQFP (PN) 12x12 mm | 80-LQFP (PN) 12x12 mm - same | 80-LQFP (PN) 12x12 mm - same | 80-LQFP (PN) 12x12 mm - same | 80-LQFP (PN) 12x12 mm - same | 80-LQFP (PN) 12x12 mm - same |
| Brand | Texas Instruments | Texas Instruments - same | Texas Instruments - same | Texas Instruments - same | Texas Instruments - same | Texas Instruments - same |
| Flash Memory | 128 KB | 64 KB (-50%) | 256 KB (+100%) | 32 KB (-75%) | 32 KB (-75%) | 128 KB (same) |
| RAM | 8 KB | 8 KB (same) | 16 KB (+100%) | 4 KB (-50%) | 4 KB (-50%) | 8 KB (same) |
| SD24 ADC Count | 3 x 24-bit | 3 x 24-bit (same) | 3 x 24-bit (same) | 3 x 24-bit (same) | 3 x 24-bit (same) | 3 x 24-bit (same) |
| LCD Driver | Yes (up to 320 segments) | Yes (up to 320 segments) | Yes (up to 320 segments) | Yes (up to 320 segments) | Yes (up to 320 segments) | Yes (up to 320 segments) |
| Real-Time Clock | Yes | Yes | Yes | Yes | No | Yes |
| Core Speed | 25 MHz | 25 MHz (same) | 25 MHz (same) | 25 MHz (same) | 25 MHz (same) | 25 MHz (same) |
| Operating Temperature | -40C to +85C | -40C to +85C (same) | -40C to +85C (same) | -40C to +85C (same) | -40C to +85C (same) | -40C to +85C (same) |
Key Differentiators
- Integrated 3-channel 24-bit Sigma-Delta ADC (vs MSP430F149IPMG4)
- 128KB Flash versus 60KB baseline (vs MSP430F6735AIPN)
- Same PN package with 256KB Flash upgrade path (vs MSP430F6737AIPN)
- Integrated RTC versus external chip (vs Discrete MCU + M41T65 RTC)
Design Notes
Route AVCC/AVSS and VCC/VSS as separate nets joined at a single point near the IC's analog ground pin (pin 18). Place the SD24 RC antialiasing filters within 5 mm of each A0+/A0-, A1+/A1-, A2+/A2- pin pair to attenuate switching-noise injection from the digital supply. The Xin/Xout 32.768 kHz crystal traces should be short and guarded by a ground ring to keep RTC tick accuracy within +/- 20 ppm.
Use a 10 uF bulk + 100 nF ceramic decoupling on VCC (pin 27) and a separate 10 uF + 100 nF on AVCC (pin 17). The integrated LDO that derives the core rail from VCC requires at least 4.7 uF of low-ESR bulk on its output. Power-rail sequencing is not required - the part tolerates simultaneous ramp - but the RTC crystal must be present before exiting LPM4.5 retention.
Do not exceed the absolute maximum VCC of 3.6 V; reverse polarity on AVCC versus VCC can permanently destroy the internal LDO. The SD24 ADCs require a calibration cycle after each power-up; refer to the 'Single-Phase Metering with MSP430F6736' TI application note (SLAE034) for the recommended sequence. Finally, unused GPIO should be configured as outputs (not inputs left floating) to avoid parasitic current draw in LPM modes.
Keep the SD24 ADC traces differential and matched in length. Place the differential pair over a continuous ground plane and avoid crossing noisy digital traces. For class-0.2 meters, the ADC clock should be derived from the DCO locked to the 32 kHz crystal (REFO mode) rather than the DCO directly, to keep gain error below 0.1% across the industrial temperature range.
Compliance Information
RoHS compliant per TI product page. Not AEC-Q100 qualified - this is a metering MCU, not an automotive part. Halogen-free status not explicitly listed in provided web data.
