Details, datasheet, quote on part number: PSD935F1V-B-20MI
PartPSD935F1V-B-20MI
CategoryMemory
DescriptionConfigurable Memory System on a Chip For 8-bit Microcontrollers
CompanyST Microelectronics, Inc.
DatasheetDownload PSD935F1V-B-20MI datasheet
  

 

Features, Applications

to 4 Mbit of Primary Flash Memory (8 uniform sectors) 256Kbit Secondary Flash Memory (4 uniform sectors) to 64 Kbit SRAM Over 3,000 Gates of PLD: DPLD 52 Reconfigurable I/O ports Enhanced JTAG Serial Port Programmable power management High Endurance: 100,000 Erase/Write Cycles of Flash Memory 1,000 Erase/Write Cycles of PLD

This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

The PSD9XX series of Programmable Microcontroller (MCU) Peripherals brings In-System-Programmability (ISP) to Flash memory and programmable logic. The result is a simple and flexible solution for embedded designs. PSD9XX devices combine many of the peripheral functions found in MCU based applications: 4 Mbit of Flash memory A secondary Flash memory for boot or data Over 3,000 gates of Flash programmable logic 64 Kbit SRAM Reconfigurable I/O ports Programmable power management.

PSD935G2 The PSD935G2 device offers two methods to program PSD Flash memory while the PSD is soldered to a circuit board.

An IEEE 1149.1 compliant JTAG-ISP interface is included on the PSD enabling the entire device (both flash memories, the PLD, and all configuration) to be rapidly programmed while soldered to the circuit board. This requires no MCU participation, which means the PSD can be programmed anytime, even while completely blank. The innovative JTAG interface to flash memories is an industry first, solving key problems faced by designers and manufacturing houses, such as:

First time programming How do I get firmware into the flash the very first time?
JTAG is the answer, program the PSD while blank with no MCU involvement.
Inventory build-up of pre-programmed devices How do I maintain an accurate

count of pre-programmed flash memory and PLD devices based on customer demand? How many and what version? JTAG is the answer, build your hardware with blank PSDs soldered directly to the board and then custom program just before they are shipped to customer. No more labels on chips and no more wasted inventory.

Expensive sockets How do I eliminate the need for expensive and unreliable

sockets? JTAG is the answer. Solder the PSD directly to the circuit board. Program first time and subsequent times with JTAG. No need to handle devices and bend the fragile leads.

Two independent flash memory arrays are included so the MCU can execute code from one memory while erasing and programming the other. Robust product firmware updates in the field are possible over any communication channel (CAN, Ethernet, UART, J1850, etc) using this unique architecture. Designers are relieved of these problems:

Simultaneous read and write to flash memory How can the MCU program the

same memory from which it is executing code? It cannot. The PSD allows the MCU to operate the two flash memories concurrently, reading code from one while erasing and programming the other during IAP.

Complex memory mapping How can I map these two memories efficiently?

A Programmable Decode PLD is embedded in the PSD. The concurrent PSD memories can be mapped anywhere in MCU address space, segment by segment with extremely high address resolution. As an option, the secondary flash memory can be swapped out of the system memory map when IAP is complete. A built-in page register breaks the MCU address limit.

Separate program and data space How can I write to flash memory while it

resides in "program" space during field firmware updates, my 80C51 won't allow it The flash PSD provides means to "reclassify" flash memory as "data" space during IAP, then back to "program" space when complete. PSDsoft ST's software development tool guides you through the design process step-by-step making it possible to complete an embedded MCU design capable of ISP/IAP in just hours. Select your MCU and PSDsoft will take you through the remainder of the design with point and click entry, covering...PSD selection, pin definitions, programmable logic inputs and outputs, MCU memory map definition, ANSI C code generation for your MCU, and merging your MCU firmware with the PSD design. When complete, two different device programmers are supported directly from PSDsoft FlashLINK (JTAG) and PSDpro. The PSD935G2 is available an 80-pin TQFP package. Please refer to the revision block at the end of this document for updated information.


 

Related products with the same datasheet
PSD935F1-12B81I
PSD935F1-12J
PSD935F1-12JI
PSD935F1-12M
PSD935F1-12MI
PSD935F1-12U
PSD935F1-12UI
PSD935F1-15B81
PSD935F1-15B81I
PSD935F1-15J
PSD935F1-15JI
PSD935F1-15M
Some Part number from the same manufacture ST Microelectronics, Inc.
PSD935F1V-B-20U Configurable Memory System on a Chip For 8-bit Microcontrollers

M27C1024-15XN3X : 1 Mbit 64kb X16 uv EPROM And OTP EPROM

PSD302L-30 : PSD(Programmable System Memories) PSD3XX/ZPSD3XX Family Low Cost Microcontroller Peripherals

PSD935G1-C-90MI : Configurable Memory System on a Chip For 8-bit Microcontrollers

PSD933F4A-12MT : Flash In-system Programmable ISP Peripherals For 8-bit MCUs

ST92185B1BN1 : 16k/24k/32k ROM Hcmos MCU WITH On-screen-display

LD29080S25R : 800ma Fixed and Adjustable Output very low drop Voltage Regulatorm

74164 : 8 BIT SIPO Shift Register

STM32F103C6U6A : 32-bit Microcontrollers Low-density performance line, ARM-based 32-bit MCU with 16 or 32 KB Flash, USB, CAN, 6 timers, 2 ADCs, 6 communication interfaces

S3016VH : 30 A, 1200 V, SCR, TO-220AB Specifications: VDRM: 1200 volts ; VRRM: 1200 volts ; IT(RMS): 30 amps ; IGT: 50 mA ; Standards and Certifications: RoHS ; Pin Count: 3

TS27L2CP : DUAL OP-AMP, 12000 uV OFFSET-MAX, 0.1 MHz BAND WIDTH, PDSO8 Specifications: Supply Voltage (VS): 10 volts ; IBIAS: 1.50E-4 µA ; CMRR: 80 dB ; Slew Rate: 0.0400 V/µs ; Operating Temperature: 0 to 70 C (32 to 158 F) ; Package Type: TSSOP, TSSOP-8 ; Number of Pins: 8 ; Number of Devices: 2

5962F9202302VYX : ACT SERIES, QUAD 4-BIT DRIVER, TRUE OUTPUT, DFP48 Specifications: Technology: CMOS ; Device Type: Line / Bus Driver ; Supply Voltage: 5V ; Operating Temperature: -55 to 125 C (-67 to 257 F) ; Package Type: FP-48 ; Pins: 48

 
0-C     D-L     M-R     S-Z