Description
The UPSD3254B Series combines a fast 8051-based microcontroller with a flexible memory structure, programmable logic, and a rich peripheral mix including USB, to form an ideal embedded controller. At its core is an industry-standard 8032 MCU operating up to 40MHz. A JTAG serial interface is used for In-System Programming (ISP) in as little as 10 seconds, perfect for manufacturing and lab development.The USB 1.1 low-speed interface has one Control endpoint and two Interrupt endpoints suitable for HID class drivers. The 8032 core is coupled to Programmable System Device (PSD) architecture to optimize the 8032 memory structure, offering two independent banks of Flash memory that can be placed at virtually any address within 8032 program or data address space, and easily paged beyond 64 Kbytes using on-chip programmable decode logic. Dual Flash memory banks provide a robust solution for remote product updates in the field through In-Application Programming (IAP). Dual Flash banks also support EEPROM emulation, eliminating the need for external EEPROM chips.General purpose programmable logic (PLD) is included to build an endless variety of gluelogic, saving external logic devices. The UPSD325xx also includes supervisor functions such as a programmable watchdog timer and low-voltage reset. In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK packages, depending on their level of environmental compliance.
- Fast 8-bit 8032 MCU
- 40 MHz at 5.0 V, 24 MHz at 3.3 V
- Core, 12-clocks per instruction
- Dual Flash memories with memory management
- Place either memory into 8032 program address space or data address space
- Read-while-write operation for inapplication programming and EEPROM emulation
- Single voltage program and erase
- 100,000 minimum erase cycles, 15-year retention
- Clock, reset, and supply management
- Normal, idle, and power down modes
- Power-on and low voltage reset supervisor
- Programmable watchdog timer
- Programmable logic, general-purpose
- 16 macrocells
- Implements state machines, glue-logic, etc.
- Timers and interrupts
- Three 8032 standard 16-bit timers
- 10 Interrupt sources with two external interrupt pins
- A/D converter
- Four channels, 8-bit resolution, 10 µs
- Communication interfaces
- USB v1.1, low-speed 1.5 Mbps, 3 endpoints
- I2C master/slave bus controller
- Two UARTs with independent baud rate
- Six I/O ports with up to 46 I/O pins
- 8032 address/data bus available on TQFP80 package
- 5 PWM outputs, 8-bit resolution
- JTAG in-system programming
- Program the entire device in as little as 10 seconds
- Single supply voltage
- 4.5 to 5.5 V
- 3.0 to 3.6 V
- ECOPACK® packages
