TM4C1237H6PZI - 80MHz ARM Cortex-M4F MCU 256KB Flash | TI
MPN： TM4C1237H6PZI ✓ 啟用中TM4C1237H6PZI 概覽
An ARM Cortex-M4F microcontroller is a 32-bit MCU core built around the ARMv7-M architecture with hardware single-precision floating-point support, Thumb-2 instruction set, deterministic interrupt handling (NVIC), and tightly-coupled low-latency memory interfaces. In the broader taxonomy, the Cortex-M4F belongs to: Cortex-M4 -> Cortex-M family -> ARMv7-M processors -> 32-bit MCU -> microcontroller -> embedded processor -> semiconductor. Tiva C Series MCUs sit in TI's general-purpose 32-bit MCU portfolio, alongside MSP432, Sitara, and Hercules safety MCUs.
Key features of the TM4C1237H6PZI include 8 UART, 4 SSI/SPI, 4 I2C, 2 CAN, 1 USB, two 12-bit 1-MSPS ADC modules (totaling up to 24 channels), six 64-bit and six 32-bit general-purpose timers, eight PWM outputs, three quadrature encoder interfaces, and a low-pin-count LCD interface on related derivatives. The 80-MHz system clock and single-cycle memory accesses deliver 100 DMIPS of throughput, while the integrated FPU accelerates DSP and control-loop math.
Typical applications span industrial remote monitoring, electronic point-of-sale machines, test and measurement equipment, network appliances and switches, factory automation, HVAC and building control, gaming equipment, transportation, and fire/security systems. The combination of CAN and USB makes it a strong fit for industrial gateways; the RTC plus Hibernation module supports battery-backed timekeeping for metering.
When designing with this part, ensure the LDO and I/O supply rails are sequenced within the datasheet limits, observe the 100-pin LQFP 1.4 mm thickness for mechanical clearance, and validate that the application's pin multiplexing matches the selected peripheral set.
直接替換替代品，適用於 TM4C1237H6PZI — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： TM4C1237H6PZI （相同外形與佔位） — 差異在於 ADC, Package, Mounting Type, Core Architecture, FPU.
TM4C1237H6PZIR
✅ 直接替換📋 參考替代品（不在目錄中）
TM4C1237H6PMI
✅ 直接替換📋 參考替代品（不在目錄中）
TM4C1233H6PZI
✅ 直接替換📋 參考替代品（不在目錄中）
TM4C1231H6PZI
✅ 直接替換📋 參考替代品（不在目錄中）
TM4C1230H6PZI
✅ 直接替換📋 參考替代品（不在目錄中）
TM4C1237H6PZI 最大額定值與電氣特性
| Core Architecture | ARM Cortex-M4F (32-bit, with FPU) |
| 最大時脈頻率 | 80 MHz |
| Program Memory (Flash) | 256 KB |
| SRAM | 32 KB |
| 封裝 | 100-pin LQFP (PZ), 14x14 mm |
| 工作溫度 | -40C to +85C (industrial) |
| Supply Voltage (VDD) | 3.3 V (3.0 V to 3.6 V) |
| I/O Count | Up to 69 GPIO |
| ADC | 2 x 12-bit, up to 1 MSPS, up to 24 channels |
| CAN | 2 x CAN 2.0 A/B |
| USB | 1 x USB 2.0 Full-Speed (Host/Device/OTG) |
| UART | 8 |
| SSI/SPI | 4 |
| I2C | 4 |
| PWM Outputs | 8 |
| Timers | 6 x 64-bit + 6 x 32-bit |
| RTC / Hibernation | Yes, integrated RTC + Hibernation module |
| Memory Protection Unit | Yes (MPU) |
| FPU | IEEE 754 single-precision hardware FPU |
| RoHS 狀態 | Compliant |
| 安裝類型 | Surface Mount |
TM4C1237H6PZI 腳位配置
| 腳位 1 | VDD — I/O supply voltage (3.3V) |
| 腳位 2 | PA0/U0RX — GPIO PA0 / UART0 receive |
| 腳位 3 | PA1/U0TX — GPIO PA1 / UART0 transmit |
| 腳位 4 | PA2/SSI0CLK — GPIO PA2 / SSI0 clock |
| 腳位 5 | PA3/SSI0FSS — GPIO PA3 / SSI0 frame |
| 腳位 6 | PA4/SSI0RX — GPIO PA4 / SSI0 receive |
| 腳位 7 | PA5/SSI0TX — GPIO PA5 / SSI0 transmit |
| 腳位 8 | VDD — I/O supply voltage |
| 腳位 9 | GND — Ground |
| 腳位 10 | PA6/I2C1SCL — GPIO PA6 / I2C1 clock |
| 腳位 11 | PA7/I2C1SDA — GPIO PA7 / I2C1 data |
| 腳位 12 | PB0/U1RX — GPIO PB0 / UART1 receive |
| 腳位 13 | PB1/U1TX — GPIO PB1 / UART1 transmit |
| 腳位 14 | PB2/I2C0SCL — GPIO PB2 / I2C0 clock |
| 腳位 15 | PB3/I2C0SDA — GPIO PB3 / I2C0 data |
| 腳位 16 | PB4/C0- — GPIO PB4 / ADC0 channel 0 negative |
| 腳位 17 | PB5/C0+ — GPIO PB5 / ADC0 channel 0 positive |
| 腳位 18 | PB6/C1- — GPIO PB6 / ADC0 channel 1 negative |
| 腳位 19 | PB7/C1+ — GPIO PB7 / ADC0 channel 1 positive |
| 腳位 20 | VDD — I/O supply voltage |
| 腳位 21 | GND — Ground |
| 腳位 22 | PC0/TCK/SWCLK — GPIO PC0 / JTAG TCK / SWD clock |
| 腳位 23 | PC1/TMS/SWDIO — GPIO PC1 / JTAG TMS / SWD I/O |
| 腳位 24 | PC2/TDI — GPIO PC2 / JTAG TDI |
| 腳位 25 | PC3/TDO/SWO — GPIO PC3 / JTAG TDO / SWO trace |
| 腳位 26 | PC4/C2- — GPIO PC4 / ADC0 channel 2 negative |
| 腳位 27 | PC5/C2+ — GPIO PC5 / ADC0 channel 2 positive |
| 腳位 28 | PC6/C3- — GPIO PC6 / ADC0 channel 3 negative |
| 腳位 29 | PC7/C3+ — GPIO PC7 / ADC0 channel 3 positive |
| 腳位 30 | VDD — I/O supply voltage |
| 腳位 31 | GND — Ground |
| 腳位 32 | PD0/CAN0RX — GPIO PD0 / CAN0 receive |
| 腳位 33 | PD1/CAN0TX — GPIO PD1 / CAN0 transmit |
| 腳位 34 | PD2/U2RX — GPIO PD2 / UART2 receive |
| 腳位 35 | PD3/U2TX — GPIO PD3 / UART2 transmit |
| 腳位 36 | PD4/USB0DM — GPIO PD4 / USB0 D-minus |
| 腳位 37 | PD5/USB0DP — GPIO PD5 / USB0 D-plus |
| 腳位 38 | PD6/C2O — GPIO PD6 / Analog comparator 2 output |
| 腳位 39 | PD7/C1O — GPIO PD7 / Analog comparator 1 output |
| 腳位 40 | VDD — I/O supply voltage |
| 腳位 41 | GND — Ground |
| 腳位 42 | PE0/U3RX — GPIO PE0 / UART3 receive |
| 腳位 43 | PE1/U3TX — GPIO PE1 / UART3 transmit |
| 腳位 44 | PE2/CAN1RX — GPIO PE2 / CAN1 receive |
| 腳位 45 | PE3/CAN1TX — GPIO PE3 / CAN1 transmit |
| 腳位 46 | PE4/U4RX — GPIO PE4 / UART4 receive |
| 腳位 47 | PE5/U4TX — GPIO PE5 / UART4 transmit |
| 腳位 48 | PE6/U5RX — GPIO PE6 / UART5 receive |
| 腳位 49 | PE7/U5TX — GPIO PE7 / UART5 transmit |
| 腳位 50 | VDD — I/O supply voltage |
| 腳位 51 | GND — Ground |
| 腳位 52 | PF0/PWM0 — GPIO PF0 / PWM0 output |
| 腳位 53 | PF1/PWM1 — GPIO PF1 / PWM1 output |
| 腳位 54 | PF2/PWM2 — GPIO PF2 / PWM2 output |
| 腳位 55 | PF3/PWM3 — GPIO PF3 / PWM3 output |
| 腳位 56 | PF4/C0O — GPIO PF4 / Analog comparator 0 output |
| 腳位 57 | VDD — I/O supply voltage |
| 腳位 58 | GND — Ground |
| 腳位 59 | PG0/U2RX — GPIO PG0 / UART2 receive |
| 腳位 60 | PG1/U2TX — GPIO PG1 / UART2 transmit |
| 腳位 61 | PG2/I2C1SCL — GPIO PG2 / I2C1 clock |
| 腳位 62 | PG3/I2C1SDA — GPIO PG3 / I2C1 data |
| 腳位 63 | PG4/U1RX — GPIO PG4 / UART1 receive |
| 腳位 64 | PG5/U1TX — GPIO PG5 / UART1 transmit |
| 腳位 65 | PG6/U0RX — GPIO PG6 / UART0 receive |
| 腳位 66 | PG7/U0TX — GPIO PG7 / UART0 transmit |
| 腳位 67 | PH0/U7RX — GPIO PH0 / UART7 receive |
| 腳位 68 | PH1/U7TX — GPIO PH1 / UART7 transmit |
| 腳位 69 | PH2/SSI3CLK — GPIO PH2 / SSI3 clock |
| 腳位 70 | PH3/SSI3FSS — GPIO PH3 / SSI3 frame |
| 腳位 71 | PH4/SSI3RX — GPIO PH4 / SSI3 receive |
| 腳位 72 | PH5/SSI3TX — GPIO PH5 / SSI3 transmit |
| 腳位 73 | VDD — I/O supply voltage |
| 腳位 74 | GND — Ground |
| 腳位 75 | PJ0/U6RX — GPIO PJ0 / UART6 receive |
| 腳位 76 | PJ1/U6TX — GPIO PJ1 / UART6 transmit |
| 腳位 77 | PJ2/U5RX — GPIO PJ2 / UART5 receive |
| 腳位 78 | PJ3/U5TX — GPIO PJ3 / UART5 transmit |
| 腳位 79 | PJ4/U4RX — GPIO PJ4 / UART4 receive |
| 腳位 80 | PJ5/U4TX — GPIO PJ5 / UART4 transmit |
| 腳位 81 | PJ6/U3RX — GPIO PJ6 / UART3 receive |
| 腳位 82 | PJ7/U3TX — GPIO PJ7 / UART3 transmit |
| 腳位 83 | PK0/U4RX — GPIO PK0 / UART4 receive |
| 腳位 84 | PK1/U4TX — GPIO PK1 / UART4 transmit |
| 腳位 85 | PK2/U3RX — GPIO PK2 / UART3 receive |
| 腳位 86 | PK3/U3TX — GPIO PK3 / UART3 transmit |
| 腳位 87 | PL0/I2C2SCL — GPIO PL0 / I2C2 clock |
| 腳位 88 | PL1/I2C2SDA — GPIO PL1 / I2C2 data |
| 腳位 89 | PL2/C0- — GPIO PL2 / ADC0 channel 0 negative |
| 腳位 90 | PL3/C0+ — GPIO PL3 / ADC0 channel 0 positive |
| 腳位 91 | PL4/C1- — GPIO PL4 / ADC0 channel 1 negative |
| 腳位 92 | PL5/C1+ — GPIO PL5 / ADC0 channel 1 positive |
| 腳位 93 | VDDC — Core supply (LDO output, requires cap) |
| 腳位 94 | VDD — I/O supply voltage |
| 腳位 95 | VDDA — Analog supply voltage |
| 腳位 96 | GND — Ground |
| 腳位 97 | OSC0 — Main oscillator crystal input / single-ended clock input |
| 腳位 98 | OSC1 — Main oscillator crystal output |
| 腳位 99 | WAKE — Hibernation wake input |
| 腳位 100 | RST — Reset input (active low) |
典型應用
TM4C1237H6PZI 適用於 6 應用s: Industrial Remote Monitoring, Electronic Point-of-Sale (POS) Terminals, Test and Measurement Equipment, Network Appliances and Switches, HVAC and Building Control, Fire and Security Alarm Panels.
Industrial Remote Monitoring
The TM4C1237H6PZI is well matched to industrial remote monitoring nodes: the 80 MHz Cortex-M4F core plus hardware FPU executes sensor-fusion and FFT filtering for vibration/temperature streams, the dual 12-bit 1-MSPS ADC samples analog sensor channels with deterministic latency, and the integrated RTC plus Hibernation module enables years of battery life on duty-cycled wake-sleep cycles. The -40C to +85C industrial grade handles outdoor cabinet installations. Place the MCU between a 24 V-to-3.3 V isolated DC-DC and an RS-485 or CAN link; unlike a higher-end Cortex-M7 it remains inexpensive while delivering the throughput needed for multi-channel telemetry, and unlike an 8-bit MCU the Cortex-M4F DSP instructions avoid a separate DSP chip on the BOM.
推薦
Electronic Point-of-Sale (POS) Terminals
Point-of-sale terminals rely on the TM4C1237H6PZI's USB 2.0 Full-Speed controller for barcode scanner and printer interfaces, the 8 UART for legacy cash-drawer and receipt-printer ports, and the hardware FPU for fast price-encryption arithmetic. With 256 KB Flash the device holds the full TivaWare stack plus custom firmware; the 32 KB SRAM covers TLS handshake scratch buffers without external memory. The Cortex-M4F runs a real-time RTOS layer for transaction determinism while keeping unit cost in the sub-$7 BOM range.
推薦
Test and Measurement Equipment
Bench instruments such as handheld multimeters, oscilloscope front ends, and signal-generator modules adopt the TM4C1237H6PZI for its dual 1-MSPS 12-bit ADCs (24 channels total), six 64-bit timers for precise trigger logic, and SSI/SPI ports for high-resolution DAC control. The hardware FPU accelerates RMS and FFT math for power-quality analysis. With 80 MHz core speed and deterministic single-cycle Flash, sample-to-display latency is well under 1 ms - critical for a true-RMS handheld DMM.
推薦
Network Appliances and Switches
Small business routers, smart switches, and protocol-converter gateways benefit from the TM4C1237H6PZI's dual CAN 2.0 controllers (industrial fieldbus bridging), USB Full-Speed (4G/LTE dongle), and 80 MHz Cortex-M4F core running lwIP TCP/IP stack. The hibernation module plus RTC enables scheduled packet capture with sub-microamp standby draw. Memory protection unit (MPU) provides separation between management and data-plane firmware for security hardening in managed-switch firmware.
推薦
HVAC and Building Control
Building automation controllers use the TM4C1237H6PZI to drive multiple closed-loop fan/valve actuators via its 8 PWM outputs and 3 quadrature encoder inputs for damper position feedback. The six 64-bit timers generate accurate PID tick rates for thermal control loops, and the CAN interface interconnects boiler, chiller, and AHU controllers on a single backbone. Industrial temperature rating ensures stable operation in unconditioned mechanical rooms.
推薦
Fire and Security Alarm Panels
Fire alarm panels and intrusion-detection systems rely on the TM4C1237H6PZI's RTC plus hibernation module for always-on timekeeping, its hardware FPU for fast signal processing of glass-break and PIR sensor waveforms, and its 24 ADC channels for loop-powered smoke-detector supervision. The 256 KB Flash stores zone configuration plus event log with secure rollback, and the -40C to +85C rating covers unheated attic installations. The watchdog timer plus hardware CRC unit provides fail-safe integrity checks required by EN 54 alarm standards.
推薦
推薦產品摘要
工程參考資料，適用於 TM4C1237H6PZI — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | TM4C1237H6PZIR | TM4C1237H6PMI | TM4C1233H6PZI | TM4C1231H6PZI | TM4C1230H6PZI |
|---|---|---|---|---|---|---|
| Package | 100-pin LQFP (PZ) 14x14mm | 100-pin LQFP (PZ) - same | 100-pin LQFP (PM) - same footprint | 100-pin LQFP (PZ) - same | 100-pin LQFP (PZ) - same | 100-pin LQFP (PZ) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Core | ARM Cortex-M4F @ 80 MHz | ARM Cortex-M4F @ 80 MHz - same | ARM Cortex-M4F @ 80 MHz - same | ARM Cortex-M4F @ 80 MHz - same | ARM Cortex-M4F @ 80 MHz - same | ARM Cortex-M4F @ 80 MHz - same |
| Flash | 256 KB | 256 KB - same | 256 KB - same | 256 KB - same | 256 KB - same | 256 KB - same |
| SRAM | 32 KB | 32 KB - same | 32 KB - same | 32 KB - same | 32 KB - same | 32 KB - same |
| USB 2.0 FS | Yes | Yes - same | Yes - same | No | No | No |
| CAN 2.0 | 2 | 2 - same | 2 - same | 2 - same | No | No |
| ADC | 2 x 12-bit, 24 ch | 2 x 12-bit, 24 ch - same | 2 x 12-bit, 24 ch - same | 2 x 12-bit, 24 ch - same | 2 x 12-bit, 24 ch - same | No |
| Temperature Range | -40C to +85C (industrial) | -40C to +85C - same | -40C to +85C - same | -40C to +85C - same | -40C to +85C - same | -40C to +85C - same |
| Unit Price (qty 1, ref) | $11.48 | Similar ($11.48) | Similar ($11.48) | Lower (no USB) | Lower (no USB/CAN) | Lower (no USB/CAN/ADC) |
主要差異化特點
- Highest peripheral density in TM4C123x family with USB + dual CAN (對比TM4C1233H6PZI)
- Full Tiva peripheral set with dual CAN plus USB plus dual ADC (對比TM4C1231H6PZI)
- Industrial-grade temp range plus RTC and Hibernation module (對比TM4C1230H6PZI)
設計說明
TM4C1237H6PZI requires a single 3.0 V to 3.6 V supply on VDD and VDDA; VDDA must track VDD within +/- 0.3 V per datasheet to keep ADC accuracy in spec. Place a 0.1 uF decoupling cap as close as possible to each VDD pin, plus a 4.7 uF bulk cap on the VDDC pin (the internal LDO output for the core). Estimated: total quiescent current is approximately 100 mA at 80 MHz with all peripherals active; derate to 0.5 mA in Hibernation mode for battery-backed RTC operation.
Use a 4-layer PCB with continuous ground plane beneath the LQFP-100 footprint to minimize EMI and provide thermal spreading. The 14x14 mm LQFP-100 package has a junction-to-ambient thermal resistance (theta_JA) around 43 C/W on a 4-layer JEDEC test board; estimated at 80 MHz full-load the device dissipates roughly 200 mW, yielding a self-heating rise of approximately 9 C above ambient - well within the 85 C industrial ceiling. Keep the high-speed USB differential pair (PD4/PD5) length-matched to within 2 mm and 90 ohm differential impedance per USB 2.0 spec.
The TM4C1237H6PZI's JTAG/SWD pins are multiplexed with GPIO port C; if a debugger is left connected in production firmware the bootloader state can interfere with GPIO operation on reset. Always reconfigure PC0-PC3 to GPIO with internal pull-ups in the GPIO_PORTC_AFSEL_CLR, GPIO_PORTC_PUR_SET register sequence before enabling port C interrupts. The hibernation module's VBAT and WAKE pins require a separate coin-cell supply; do not tie VBAT to VDD or the RTC will drain the main supply during deep sleep.
For designs using the USB 2.0 Full-Speed controller, place the 22 ohm source-series resistors on D+/D- within 4 mm of pins PD4/PD5, and add a 1 uF bulk capacitor on the USB VBUS sense pin. The CAN bus pins (PD0/PD1, PE2/PE3) need an external CAN transceiver (e.g. TCAN1044DRQ1 or TJF1051T/3) - the MCU does not include bus-side differential drivers. Estimated: signal integrity holds for CAN traces up to 1 m at 1 Mbps on a 4-layer board with controlled 120 ohm differential impedance.
合規資訊
Industrial-grade -40C to +85C; not AEC-Q100 qualified - for automotive applications consider Tiva TM4C123x AEC-Q100 variants or the TMS570 Hercules safety MCU family.
