汽车级 ST72321BJ9 8位微控制器的汽车有32至60KB Flash/ROM,ADC,5定时器的SPI,SCI,I²C接口TQFP-44封装
The ST72F321B-Auto Flash and ST72321B-Auto ROM devices are members of the ST7 microcontroller family designed for mid-range automotive applications. Different package options offer up to 48 I/O pins.
All devices are based on a common industry-standard 8-bit core, featuring an enhanced instruction set and are available with Flash or ROM program memory. The ST7 family architecture offers both power and flexibility to software developers, enabling the design of highly efficient and compact application code.
The on-chip peripherals include an A/D converter, a PWM autoreload timer, two general purpose timers, a watchdog timer, a real-time base main clock controller, I²C, SPI and SCI interfaces.
For power economy, the microcontroller can switch dynamically into Wait, Slow, Active Halt or Halt mode when the application is in idle or standby state.
Typical applications include：
- all types of car body applications such as window lift, DC motor control, rain sensors
- safety microcontroller in airbag and engine management applications
- auxiliary functions in car radios
Related documentation
Migrating applications from ST72511/311/314 to ST72521/321/324 (AN1131)
| Device | Prog. memory | RAM (stack) | Oper. voltage | Temp. range | Package | |
| ST72321BR9 Automotive |
Flash/ROM 60 Kbytes |
2048 (256) bytes |
3.8 to 5.5V | Up to -40 to 125°C |
LQFP64 | 14x14 |
| ST72321BAR9 Automotive |
10x10 | |||||
| ST72321BJ9 Automotive |
LQFP44 | 10x10 | ||||
| ST72321BR7 Automotive |
Flash/ROM 48 Kbytes |
1536 (256) bytes |
LQFP64 | 14x14 | ||
| ST72321BAR7 Automotive |
10x10 | |||||
| ST72321BJ7 Automotive |
LQFP44 | 10x10 | ||||
| ST72321BR6 Automotive |
Flash/ROM 32 Kbytes |
1024 (256) bytes |
LQFP64 | 14x14 | ||
| ST72321BAR6 Automotive |
10x10 | |||||
| ST72321BJ6 Automotive |
LQFP44 | 10x10 | ||||
ST72321BJ9 订购型号:
| Ordering Model | Marketing Status | Package | Core | FLASH Size | Internal RAM Size | A/D Converter | 12 or 16-bit timer (IC/OC/PWM) | 8-bit timer (IC/OC/PWM) | Other timer functions | Serial Interface | Supply Voltage(Vcc) | Supply Voltage(Vcc) | Other Functions |
| nom | nom | min | max | ||||||||||
| kB | B | V | V | ||||||||||
| ST72F321BLJ6TA | Proposal | TQFP 44 10x10x1.4 1.0 | ST7 | 60 | 2048 | 10x12-bit | 2(3/3/2) | 1(0/4/4) | ART, WDG, RTC | SPI, SCI, I²C | 3.8 | 5.5 | Nested interrupts, beep |
| ST72F321BJ9TAE | Active | TQFP 44 10x10x1.4 1.0 | ST7 | 60 | 2048 | 10x12-bit | 2(3/3/2) | 1(0/4/4) | ART, WDG, RTC | SPI, SCI, I²C | 3.8 | 5.5 | Nested interrupts, beep |
| ST72F321BLJ6TA | Proposal | TQFP 44 10x10x1.4 1.0 | ST7 | 60 | 2048 | 10x12-bit | 2(3/3/2) | 1(0/4/4) | ART, WDG, RTC | SPI, SCI, I²C | 3.8 | 5.5 | Nested interrupts, beep |
| ST72F321BJ9TCE | Active | TQFP 44 10x10x1.4 1.0 | ST7 | 60 | 2048 | 10x12-bit | 2(3/3/2) | 1(0/4/4) | ART, WDG, RTC | SPI, SCI, I²C | 3.8 | 5.5 | Nested interrupts, beep |
ST72321BJ9 产品特点
- Memories
—32 to 60 Kbyte dual voltage High Density Flash (HDFlash) ROM with readout protection capability. In-application programming and incircuit programming for HDFlash devices
—1 to 2 Kbyte RAM
—HDFlash endurance: 100 cycles, data retention 20 years - lock, reset and supply management
—Enhanced low voltage supervisor (LVD) for main supply and auxiliary voltage detector (AVD) with interrupt capability
—Clock sources: crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock
—PLL for 2x frequency multiplication
—4 power saving modes: Halt, Active Halt, Wait and Slow - nterrupt management
—Nested interrupt controller
—14 interrupt vectors plus TRAP and RESET
—Top Level Interrupt (TLI) pin on 64-pin devices
—15/9 external interrupt lines (on 4 vectors) - analog peripheral (low current coupling)
—10-bit ADC with up to 16 input ports - p to 48 I/O ports
—48/32/24 multifunctional bidirectional I/O lines
—34/22/17 alternate function lines
—16/12/10 high sink outputs - timers
—Main clock controller with Real-time base, Beep and Clock-out capabilities
—Configurable watchdog timer
—Two 16-bit timers with 2 input captures, 2 output compares, external clock input on 1
timer, PWM and pulse generator modes
—8-bit PWM auto-reload timer with 2 input captures, 4 PWM outputs, output compare and time base interrupt, external clock with event detector - communications interfaces
—SPI synchronous serial interface
—SCI asynchronous serial interface
—I²C multimaster interface - evelopment tools
—Full HW/SW development pkg, ICT capability
ST72321BJ9 技术支持与电子电路设计开发资源下载
- ST 意法8位汽车微控制器ST7系列ST72321BJ9 数据手册 DataSheet 下载.pdf
- ST 意法微控制器选型指南.pdf
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