參數(shù)資料
型號： PSD813F1A-90MT
廠商： 意法半導(dǎo)體
英文描述： Flash In-System Programmable (ISP) Peripherals for 8-bit MCUs, 5V
中文描述： Flash在系統(tǒng)可編程（ISP）的周邊8位MCU，5V的
文件頁數(shù)： 19/110頁
文件大?。?/td> 1685K
代理商： PSD813F1A-90MT
19/110
PSD813F1
Memory Operation
The main Flash and EEPROM memory are ad-
dressed through the microcontroller interface on
the PSD device. The microcontroller can access
these memories in one of two ways:
–
The microcontroller can execute a typical bus
WRITE or READ operation just as it would if
accessing a RAM or ROM device using
standard bus cycles.
–
The microcontroller can execute a specific
instruction that consists of several WRITE and
READ operations. This involves writing
specific data patterns to special addresses
within the Flash or EEPROM to invoke an
embedded algorithm. These instructions are
summarized in
Table 8., page 20
.
Typically, Flash memory can be read by the micro-
controller using READ operations, just as it would
read a ROM device. However, Flash memory can
only be erased and programmed with specific in-
structions. For example, the microcontroller can-
not write a single byte directly to Flash memory as
one would write a byte to RAM. To program a byte
into Flash memory, the microcontroller must exe-
cute a program instruction sequence, then test the
status of the programming event. This status test
is achieved by a READ operation or polling the
Ready/Busy pin (PC3).
The Flash memory can also be read by using spe-
cial instructions to retrieve particular Flash device
information (sector protect status and ID).
The EEPROM is a bit different. Data can be written
to EEPROM memory using write operations, like
writing to a RAM device, but the status of each
WRITE event must be checked by the microcon-
troller. A WRITE event can be one to 64 contigu-
ous bytes. The status test is very similar to that
used for Flash memory (READ operation or
Ready/Busy). Optionally, the EEPROM memory
may be put into a Software Data Protect (SDP)
mode where it requires instructions, rather than
operations, to alter its contents. SDP mode makes
writing to EEPROM much like writing to Flash
memory.
相關(guān)PDF資料
PDF描述
PSD813F1V Flash In-System Programmable ISP Peripherals For 8-bit MCUs
PSD813F2V-15 Flash In-System Programmable (ISP) Peripherals for 8-bit MCUs, 5V
PSD813F2V-20 Flash In-System Programmable (ISP) Peripherals for 8-bit MCUs, 5V
PSD813F2V-70 Flash In-System Programmable (ISP) Peripherals for 8-bit MCUs, 5V
PSD813F2V-90 Flash In-System Programmable (ISP) Peripherals for 8-bit MCUs, 5V
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PSD813F1A-90U 功能描述:CPLD - 復(fù)雜可編程邏輯器件 5.0V 1M 90ns RoHS:否 制造商:Lattice 系列: 存儲類型:EEPROM 大電池數(shù)量:128 最大工作頻率:333 MHz 延遲時間:2.7 ns 可編程輸入/輸出端數(shù)量:64 工作電源電壓:3.3 V 最大工作溫度:+ 90 C 最小工作溫度:0 C 封裝 / 箱體:TQFP-100
PSD813F1A-90UI 功能描述:SPLD - 簡單可編程邏輯器件 5.0V 1M 90ns RoHS:否 制造商:Texas Instruments 邏輯系列:TICPAL22V10Z 大電池數(shù)量:10 最大工作頻率:66 MHz 延遲時間:25 ns 工作電源電壓:4.75 V to 5.25 V 電源電流:100 uA 最大工作溫度:+ 75 C 最小工作溫度:0 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:DIP-24
PSD813F1A-90UT 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System Programmable (ISP) Peripherals for 8-bit MCUs, 5V
PSD813F1AV-12JIT 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System Programmable (ISP) Peripherals for 8-bit MCUs, 3.3V
PSD813F1AV-12JT 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System Programmable (ISP) Peripherals for 8-bit MCUs, 3.3V
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