PSD935G2
PSD935G2 is Configurable Memory manufactured by STMicroelectronics.
FEATURES
SUMMARY s 5 V±10% Single Supply Voltage: s Up to 4 Mbit of Primary Flash Memory (8 uniform sectors) s 256Kbit Secondary Flash Memory (4 uniform sectors) s Up to 64 Kbit SRAM s Over 3,000 Gates of PLD: DPLD s 52 Reconfigurable I/O ports s Enhanced JTAG Serial Port s Programmable power management s High Endurance:
- 100,000 Erase/Write Cycles of Flash Memory
- 1,000 Erase/Write Cycles of PLD
Figure 1. Packages
TQFP80 (U)
January 2002
1/3
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
PSD9XX Family
Configurable Memory System on a Chip for 8-Bit Microcontrollers
1.0 Introduction
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 bine 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.
PSD9XX Family
1.0 Introduction
(Cont.)
The PSD935G2 device offers two methods to program PSD Flash memory while the PSD is soldered to a circuit board. t In-System Programming (ISP) via JTAG
An IEEE 1149.1 pliant 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 pletely 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...
