參數(shù)資料
型號: PSD4235G3-A-15B81
廠商: 意法半導(dǎo)體
英文描述: CAP 47UF 6.3V 20% TANT SMD-3216-18 TR-13-PL SN100%
中文描述: Flash在系統(tǒng)可編程ISP的外設(shè)的16位微控制器5V電源
文件頁數(shù): 6/89頁
文件大?。?/td> 703K
代理商: PSD4235G3-A-15B81
PSD4235G2
6/89
Figure 3. TQFP Connections
In-Application Programming (IAP)
Two independent Flash memory arrays are includ-
ed so that the MCU can execute code from one
while erasing and programming the other. Robust
product firmware updates in the filed are possible
over any communication channel (CAN, Ethernet,
UART, J1850, etc) using this unique architecture.
Designers are relieved of these problems:
Simultaneous read and write to Flash memo-
ry.
How can the MCU program the same memory
from which it executing code It cannot. The PSD
allows the MCU to operate the two Flash memory
blocks concurrently, reading code from one while
erasing and programming the other during IAP.
Complex memory mapping.
How can I map
these two memories efficiently A programmable
Decode PLD (DPLD) is embedded in the PSD.
The concurrent PSD memories can be mapped
anywhere in MCU address space, segment by
segment with extermely high address resolution.
As an option, the secondary Flash memory can be
swapped out of the system memory map when
IAP is complete. A built-in page register breaks the
MCU address limit.
Separate Program and Data space.
How can I
write to Flash memory while it resides in Program
space during field firmware updates My
80C51XA will not allow it. The PSD provides
means to reclassify Flash memory as Data space
during IAP, then back to Program space when
complete.
60 CNTL1
59 CNTL0
58 PA7
57 PA6
56 PA5
55 PA4
54 PA3
53 PA2
52 PA1
51 PA0
50 GND
49 GND
48 PC7
47 PC6
46 PC5
45 PC4
44 PC3
43 PC2
42 PC1
41 PC0
PD2
PD3
AD0
AD1
AD2
AD3
AD4
GND
VCC
AD5
AD6
AD7
AD8
AD9
AD10
AD11
AD12
AD13
AD14
AD15
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C
AI04943
相關(guān)PDF資料
PDF描述
PSD4235G3-A-15B81I Flash In-System-Programmable Peripherals for 16-Bit MCUs
PSD4235G3-A-15J Flash In-System-Programmable Peripherals for 16-Bit MCUs
PSD4235G3-A-15JI CAP 0.68UF 20V 10% TANT SMD-3216-18 TR-13-PL GOLD
PSD4235G3-A-15M CAP 0.68UF 20V 10% TANT SMD-3216-18 TR-13-PL SN/PB5%
PSD4235G3-A-15MI CAP 0.68UF 20V 10% TANT SMD-3216-18 TR-13-PL SN100%
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