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PSD4256G6

Description
Flash In-System Programmable ISP Peripherals for 16-bit MCUs
File Size568KB,100 Pages
ManufacturerSTMicroelectronics
Websitehttp://www.st.com/
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PSD4256G6 Overview

Flash In-System Programmable ISP Peripherals for 16-bit MCUs

PSD4256G6V
Flash In-System Programmable (ISP)
Peripherals for 16-bit MCUs
PRELIMINARY DATA
FEATURES SUMMARY
PSD provides an integrated solution to 16-bit
MCU-based applications that includes config-
urable memories, PLD logic, and I/O:
s
Dual bank Flash memories
– 8Mbits of Primary Flash Memory (16 uniform
sectors, 64Kbyte)
– 512Kbits of Secondary Flash Memory with 4
sectors
– Concurrent operation: READ from one mem-
ory while erasing and writing the other
s
s
s
High Endurance:
– 100,000 Erase/WRITE Cycles of Flash Mem-
ory
– 1,000 Erase/WRITE Cycles of PLD
– 15 Year Data Retention
s
Single Supply Voltage
– 3V (+20%/–10%)
Memory Speed
– 100ns Flash memory and SRAM access time
for V
CC
= 3V (+20%/–10%)
– 90ns Flash memory and SRAM access time
for V
CC
= 3.3V (+/–10%)
s
256Kbits of SRAM (battery-backed)
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 de-
coding
Figure 1. 80-lead, Thin, Quad, Flat Package
s
Seven l/O Ports with 52 I/O pins:
52 individually configurable I/O port pins that
can be used for the following functions:
– MCU I/Os
– PLD I/Os
– Latched MCU address output
– Special function I/Os
– l/O ports may be configured as open-drain
outputs
TQFP80 (U)
s
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
s
Page Register
– Internal page register that can be used to ex-
pand the microcontroller address space by a
factor of 256
s
Programmable power management
1/100
December 2002
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

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Description Flash In-System Programmable ISP Peripherals for 16-bit MCUs Flash In-System Programmable ISP Peripherals for 16-bit MCUs Flash In-System Programmable ISP Peripherals for 16-bit MCUs Flash In-System Programmable ISP Peripherals for 16-bit MCUs Flash In-System Programmable ISP Peripherals for 16-bit MCUs Flash In-System Programmable ISP Peripherals for 16-bit MCUs Flash In-System Programmable ISP Peripherals for 16-bit MCUs
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