Quick Detail:
Flash In-System Programmable ISP Peripherals For 8-bit MCUs
Description:
The PSD8XXFX family of memory systems for microcontrollers (MCUs)
brings In-System-Programmability (ISP) to Flash memory and
programmable logic. The result is a simple and flexible solution
for embedded designs. PSD devices combine many of the peripheral
functions found in MCU based applications.
Table 1 summarizes all the devices in the PSD834F2, PSD853F2,
PSD854F2.
The CPLD in the PSD devices features an optimized macrocell logic
architecture. The PSD macrocell was created to address the unique
requirements of embedded system designs. It allows direct
connection between the system address/data bus, and the internal
PSD registers, to simplify communication between the MCU and other
supporting devices.
The PSD device includes a JTAG Serial Programming interface, to
allow In-System Programming (ISP) of the entire device. This
feature reduces development time, simplifies the manufacturing
flow, and dramatically lowers the cost of field upgrades.
Using ST’s special Fast-JTAG programming, a design can be rapidly
programmed into the PSD in as little as seven seconds.
The innovative PSD8XXFX family solves key problems faced by
designers when managing discrete Flash memory devices, such as:
– First-time In-System Programming (ISP)
– Complex address decoding
– Simultaneous read and write to the device.
The JTAG Serial Interface block allows In-System Programming (ISP),
and eliminates the need for an external Boot EPROM, or an external
programmer. To simplify Flash memory updates, program execution is
performed from a secondary Flash memory while the primary Flash
memory is being updated. This solution avoids the complicated
hardware and software overhead necessary to implement IAP.
ST makes available a software development tool, PSDsoft Express,
that generates ANSI-C compliant code for use with your target MCU.
This code allows you to manipulate the non-volatile memory (NVM)
within the PSD. Code examples are also provided for:
– Flash memory IAP via the UART of the host MCU
– Memory paging to execute code across several PSD memory pages
– Loading, reading, and manipulation of PSD macrocells by the MCU.
Applications:
■ FLASH IN-SYSTEM PROGRAMMABLE (ISP) PERIPHERAL FOR 8-BIT MCUS
■ DUAL BANK FLASH MEMORIES
– UP TO 2 Mbit OF PRIMARY FLASH
MEMORY (8 Uniform Sectors, 32K x8)
– UP TO 256 Kbit SECONDARY FLASH
MEMORY (4 Uniform Sectors)
– Concurrent operation: READ from one memory while erasing and
writing the other
■ UP TO 256 Kbit BATTERY-BACKED SRAM
■ 27 RECONFIGURABLE I/O PORTS
■ ENHANCED JTAG SERIAL PORT
■ PLD WITH MACROCELLS
– Over 3000 Gates of PLD: CPLD and DPLD
– CPLD with 16 Output Macrocells (OMCs) and 24 Input Macrocells
(IMCs)
– DPLD - user defined internal chip select decoding
■ 27 INDIVIDUALLY CONFIGURABLE I/O PORT PINS
The can be used for the following functions:
– MCU I/Os
– PLD I/Os
– Latched MCU address output
– Special function I/Os.
– 16 of the I/O ports may be configured as open-drain outputs.
■ IN-SYSTEM PROGRAMMING (ISP) WITH JTAG
– Built-in JTAG compliant serial port allows full-chip In-System
Programmability
– Efficient manufacturing allow easy product testing and
programming
– Use low cost FlashLINK cable with PC
■ PAGE REGISTER
– Internal page register that can be used to expand the
microcontroller address space by a factor of 256
■ PROGRAMMABLE POWER MANAGEMENT
■ HIGH ENDURANCE:
– 100,000 Erase/WRITE Cycles of Flash Memory
– 1,000 Erase/WRITE Cycles of PLD
– 15 Year Data Retention
■ 5V±10% SINGLE SUPPLY VOLTAGE
■ STANDBY CURRENT AS LOW AS 50µA
Specifications:
Datasheets | PSD8xxFx |
Product Photos | 52-PLCC |
Standard Package | 500 |
Category | Integrated Circuits (ICs) |
Family | Memory |
Series | - |
Packaging | Tube |
Format - Memory | FLASH |
Memory Type | FLASH |
Memory Size | 2M (256K x 8) |
Speed | 90ns |
Interface | Parallel |
Voltage - Supply | 4.5 V ~ 5.5 V |
Operating Temperature | 0°C ~ 70°C |
Package / Case | 52-LCC (J-Lead) |
Supplier Device Package | 52-PLCC (19.1x19.1) |
Other Names | 497-2027-5 |
Competitive Advantage:
Warranty :180days for all goods
Free shipping:Order over $600 win a free shipment fee:goods weight
below 3Kg.
Mega Source Electronics stocks components ready to ship. Hard to
find, obsolete and highly allocated integrated circuits and
semiconductors are all can be found by us.
Mega Source Electronics has established a well-developed logistics
system and global logistics network, which can guarantee our
service very quick, convenient and efficient.
