Features: FLASH IN-SYSTEM PROGRAMMABLE (ISP) PERIPHERAL FOR 8-BIT MCUSDUAL 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 otherUP...
PSD833F2V: Features: FLASH IN-SYSTEM PROGRAMMABLE (ISP) PERIPHERAL FOR 8-BIT MCUSDUAL BANK FLASH MEMORIES UP TO 2 Mbit OF PRIMARY FLASH MEMORY (8 Uniform Sectors, 32K x8) UP TO 256 Kbit SECONDARY FLASH MEMORY ...
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Features: ` DUAL BANK FLASH MEMORIES 1 Mbit of Primary Flash Memory (8 Uniform Sectors) 256 Kbit S...
Max.
Symbol | Parameter | Min. | Max. | Unit |
TSTG Storage | Temperature | 65 | 125 | °C |
TLEAD | Lead Temperature during Soldering (20 seconds max.)1 | 235 | °C | |
VIO | Input and Output Voltage (Q = VOH or Hi-Z) | 0.6 |
7.0 |
V |
VCC | Supply Voltage | 0.6 | 7.0 | V |
VPP | Device Programmer Supply Voltage | 0.6 | 14.0 |
V |
VESD | Electrostatic Discharge Voltage (Human Body model)2 |
2000 | 2000 | V |
The PSD833F2V family of memory systems for mi-crocontrollers (MCUs) brings In-System-Program-mability (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 PSD833F2V PSD834F2, PSD853F2, PSD854F2. The CPLD in the PSD devices features an opti-mized macrocell logic architecture. The PSD mac-rocell was created to address the unique requirements of embedded system designs. It al-lows direct connection between the system ad- dress/data bus, and the internal PSD registers, to simplify communication between the MCU and other supporting devices.
The PSD833F2V device includes a JTAG Serial Program-ming interface, to allow In-System Programming (ISP) of the entire device. This feature reduces de- velopment time, simplifies the manufacturing flow,and dramatically lowers the cost of field upgrades.Using ST's special Fast-JTAG programming, a de-sign can be rapidly programmed into the PSD in as little as seven seconds.
The innovative PSD833F2V family solves key problems faced by designers when managing dis-crete 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 program- mer. 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 im-plement IAP.
ST makes available a software development tool,PSDsoft Express, that generates ANSI-C compli-ant code for use with your target MCU. This code allows you to manipulate the non-volatile memory (NVM) within the PSD833F2V. 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.