S32K312

32-bit Automotive Microcontroller

The S32K312 is a 32-bit automotive microcontroller from NXP Semiconductors. View the full S32K312 datasheet below including key specifications, electrical characteristics.

Official S32K312 datasheet (PDF) — the source this page was extracted from.

Manufacturer

NXP Semiconductors

S32K312 Key Specifications

Parameter	Value
ADC	12-bit, up to 24 channels per module
Debug	SWJ-DP / SWD, SWO, ITM, ETM-style trace (HTM)
CPU Core	1x Arm Cortex-M7 (32-bit)
Security	HSE_B hardware security engine
Total RAM	192 KB (incl. 96 KB TCM)
Unique ID	120-bit
Standby RAM	16 KB
DMA Channels	32 (up to 128 request sources via DMAMUX)
Data Flash Memory	128 KB
Max CPU Frequency	120 MHz
Program Flash Memory	2 MB with ECC
Supply Voltage Range	2.97 V to 5.5 V
Communication Interfaces	LPUART (LIN/UART), LPSPI, LPI2C, FlexCAN (optional CAN FD), FlexIO, Ethernet, SAI, QuadSPI
Functional Safety Rating	ASIL B
Operating Ambient Temperature	-40 °C to 125 °C
Max RUN Current @120 MHz (125 °C)	120.7 mA
Typical RUN Current @120 MHz (25 °C)	54 mA

S32K312 Overview

Part: S32K312 — NXP Semiconductors

Type: 32-bit Automotive Microcontroller

Description: ASIL-B rated 32-bit Arm Cortex-M7 microcontroller operating up to 120 MHz with 2 MB program flash, 128 KB data flash, and 192 KB SRAM.

Operating Conditions:

Supply voltage: 2.97 V to 5.5 V
Operating temperature: -40 °C to 125 °C (ambient temperature for all power modes)
Maximum core frequency: 120 MHz

Key Specs:

Core: Single Arm Cortex-M7 32-bit CPU with FPU and DSP up to 120 MHz
Flash memory: 2 MB program flash with ECC, 128 KB data flash
SRAM: 192 KB total RAM (includes 96 KB TCM RAM) with ECC
Standby RAM: 32 KB
DMA: 32 channels with DMAMUX
ADC: 2 instances, 12-bit Analog-to-Digital Converter
Analog comparators: 2 LPCMP instances with internal 8-bit DAC
Serial communications: 8 LPUART, 4 LPSPI, 2 LPI2C, 3 FlexCAN instances
FlexIO: 32 channels (including SENT support)

Features:

Hardware Security Engine (HSE_B)
ASIL-B functional safety capability
Memory protection via Extended Cross domain Domain Controller (XRDC) and Virtualization Wrapper (VIRT_WRAPPER)
Error-Correcting Code (ECC) on all memories and EDC on data path
Low Power Inter-Integrated Circuit (LPI2C) modules with DMA support
FlexCAN modules with optional CAN FD support
Serial Wire JTAG debug Port (SWJ-DP) and CoreSight trace macrocell

Applications:

Automotive body and comfort
Harsh electrical and automotive environments
General-purpose ASIL-B automotive control systems

Package:

100-pin HDQFP
172-pin HDQFP
257-ball MAPBGA

S32K312 Electrical Characteristics

Some devices (S32K358, S32K348, S32K338, S32K328, S32K388 and S32K389) support a SMPS, DC-DC buck converter stage, with a dedicated pin to control an external Power P-channel MOSFET. In addition to the PMOS, an external inductor and a Schottky diode are required. See related figures in section "Recommended decoupling capacitors".

The chip hardware design guidelines document lists the recommended part numbers for PMOS, Schottky diode and inductor.

Table 12. V15 regulator (SMPS option) electrical specifications

Symbol	Description	Min	Typ	Max	Unit	Condition	Spec Number
V15	V15 output	-	1.5	-	V	-	-
L_SMPS	External coil inductance	-	4.7	-	μH	-	-
COUT_V15_SMPS	External bypass capacitor	-	20-22	-	μF	-	-
D_SMPS	External Schottky diode average forward current	-	2	-	A	-	-
VR	Schottky diode reverse voltage	5.0	-	-	V	-	-
IF	Schottky diode forward current	1.0	-	-	A	-	-
-	External P-channel MOSFET total gate charge	-	-	10	nC	VDD_DCDC = 5V	-
-	External P-channel MOSFET threshold voltage	-	-	2	V	-	-
CBULK_SMPS	Input supply bulk capacitor for internal SMPS 1	-	22	-	μF	-	-

Table 12. V15 regulator (SMPS option) electrical specifications

S32K3xx Data Sheet

S32K312 Thermal Information

Symbol	Description	Min	Typ	Max	Unit	Condition	Spec Number
Tamb	Ambient temperature	-40	-	105	°C	V- Grade	-
Tamb	Ambient temperature	-40	-	125	°C	M- Grade	-
TJ	Junction temperature	-40	-	150	°C	-	-

For S32K388 and S32K389, applications running at 125°C Tamb, thermal management schemes at PCB level will have to be deployed to keep TJ below 150°C.

S32K312 Package Information

Package dimensions are provided in the package drawings. To find a package drawing, go to nxp.com and perform a keyword search for the drawing's document number:

Package option	Document Number
48-pin LQFP	98ASH00962A
257-ball MAPBGA	98ASA01483D
172-pin HDQFP	98ASA01107D
100-pin HDQFP	98ASA01570D
172-pin HDQFP_EP	98ASA01667D
289-ball MAPBGA	98ASA01216D
437-BGA	98ASA01918D

Other Microcontrollers (MCU)

STM32F407VET6 – STMicroelectronics, ARM Cortex-M4 MCU
STM32H563ZIT6 – STMicroelectronics, Arm Cortex-M33 32-bit MCU
RP2040 – Raspberry Pi, Microcontroller
STM32H743VIT6 – STMicroelectronics, Microcontroller Unit (MCU)
STM32U575RIT6 – STMicroelectronics, Ultra-low-power Arm Cortex-M33 32-bit MCU
STM32L011F4U6 – STMicroelectronics, Ultra-low-power Arm Cortex-M0+ MCU
GD32F103C8T6 – GigaDevice, Arm Cortex-M3 32-bit MCU
CH32H417QEU6 – WCH, Dual-Core RISC-V Microcontroller

All Microcontrollers (MCU) datasheets All NXP Semiconductors datasheets (189)

Data on this page is extracted from publicly available manufacturer datasheets using automated tools including AI. It may contain errors or omissions. Always verify specifications against the official manufacturer datasheet before making design or purchasing decisions. See our Terms of Service. Rights holders can submit a takedown request.

Ask your AI agent about the S32K312

Connect SheetsData to Claude, Cursor, Codex or any MCP client and your agent reads this datasheet for you: pinout, limits, register maps and design checks, with the numbers taken from the PDF.

claude mcp add --transport http sheetsdata https://mcp.sheetsdata.com/mcp

Then ask: "Can the S32K312 run from my 12 V rail? Check it against the datasheet limits."

Create a free account $2 of usage every month, no card needed.