Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

VRS51L560-40-L Datasheet(PDF) 9 Page - List of Unclassifed Manufacturers

Part # VRS51L560-40-L
Description  Versa 8051 MCUs with 8/16KB Flash
Download  40 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  ETC1 [List of Unclassifed Manufacturers]
Direct Link  
Logo ETC1 - List of Unclassifed Manufacturers

VRS51L560-40-L Datasheet(HTML) 9 Page - List of Unclassifed Manufacturers

Back Button VRS51L560-40-L Datasheet HTML 5Page - List of Unclassifed Manufacturers VRS51L560-40-L Datasheet HTML 6Page - List of Unclassifed Manufacturers VRS51L560-40-L Datasheet HTML 7Page - List of Unclassifed Manufacturers VRS51L560-40-L Datasheet HTML 8Page - List of Unclassifed Manufacturers VRS51L560-40-L Datasheet HTML 9Page - List of Unclassifed Manufacturers VRS51L560-40-L Datasheet HTML 10Page - List of Unclassifed Manufacturers VRS51L560-40-L Datasheet HTML 11Page - List of Unclassifed Manufacturers VRS51L560-40-L Datasheet HTML 12Page - List of Unclassifed Manufacturers VRS51L560-40-L Datasheet HTML 13Page - List of Unclassifed Manufacturers Next Button
Zoom Inzoom in Zoom Outzoom out
 9 / 40 page
background image
VRS51x550/560
______________________________________________________________________________________________
www.ramtron.com
page 9 of 40
Input/Output Ports
The VRS51x550 and VRS51x560 each have a total of
32 bi-directional I/O lines grouped into four 8-bit I/O
ports. These I/Os can be individually configured as
inputs or outputs.
With the exception of the P0 I/Os, which are of the
open drain type, each I/O consists of a transistor
connected to ground and a weak pull-up resistor.
Writing a 0 in a given I/O port bit register will activate
the transistor connected to Vss. This will bring the I/O
to a LOW level.
Writing a 1 into a given I/O port bit register deactivates
the transistor between the pin and ground. In this case,
the pull-up resistor will bring the corresponding pin to a
HIGH level.
To use a given I/O as an input, a 1 must be written into
its associated port register bit. By default, upon reset
all the I/Os are configured as inputs.
General Structure of an I/O Port
The following elements establish the link between the
core unit and the pins of the microcontroller:
Special Function Register (same name as port)
Output Stage Amplifier (the structure of this
element varies with its auxiliary function)
From the next figure, one can see that the D flip-flop
stores the value received from the internal bus after
receiving a write signal from the core. Also, note that
the Q output of the flip-flop can be linked to the internal
bus by executing a read instruction.
This is how one would read the content of the register.
It is also possible to link the value of the pin to the
internal bus. This is done by the “read pin” instruction.
In short, the user may read the value of the register or
the pin.
FIGURE 6: INTERNAL STRUCTURE OF ONE OF THE EIGHT I/O PORT LINES
D Flip-Flop
Output
Stage
Q
Q
IC Pin
Read Register
Internal Bus
Write to
Register
Read Pin
Structure of the P1, P2, P3
The following figure describes the general structure of
the P1, P2 and P3 ports. Note that the figure below
does not show the intermediary logic that connects the
register output with the output stage because this logic
varies with the auxiliary function of each port.
FIGURE 7: GENERAL STRUCTURE OF THE OUTPUT STAGE OF P1, P2 AND P3
D Flip-Flop
Q
Q
IC Pin
Read Register
Internal Bus
Write to
Register
Read Pin
Vcc
Pull-up
Network
X1
Each line may be used independently as a logical
input
or
output.
When
used
as
an
input,
the
corresponding port register bit must be high.


Similar Part No. - VRS51L560-40-L

ManufacturerPart #DatasheetDescription
logo
List of Unclassifed Man...
VRS51L540-25-L ETC1-VRS51L540-25-L Datasheet
1Mb / 40P
   Versa 8051 MCU with 4KB Flash
VRS51L540-25-L-G ETC1-VRS51L540-25-L-G Datasheet
1Mb / 40P
   Versa 8051 MCU with 4KB Flash
VRS51L540-25-LG ETC1-VRS51L540-25-LG Datasheet
1Mb / 40P
   Versa 8051 MCU with 4KB Flash
VRS51L540-25-P ETC1-VRS51L540-25-P Datasheet
1Mb / 40P
   Versa 8051 MCU with 4KB Flash
VRS51L540-25-P-G ETC1-VRS51L540-25-P-G Datasheet
1Mb / 40P
   Versa 8051 MCU with 4KB Flash
More results

Similar Description - VRS51L560-40-L

ManufacturerPart #DatasheetDescription
logo
List of Unclassifed Man...
VRS51X570 ETC1-VRS51X570 Datasheet
2Mb / 49P
   Versa 8051 MCUs with 32/64KB
logo
Generalplus Technology ...
GPM8F3716B GENERALPLUS-GPM8F3716B Datasheet
2Mb / 86P
   16KB Flash 8051 Microcontroller
logo
List of Unclassifed Man...
VRS51X540 ETC1-VRS51X540 Datasheet
1Mb / 40P
   Versa 8051 MCU with 4KB Flash
logo
Ramtron International C...
VRS51C1000 RAMTRON-VRS51C1000 Datasheet
474Kb / 48P
   Versa 8051 MCU with 64KB of IAP/ISP Flash
logo
List of Unclassifed Man...
VRS51C1100 ETC1-VRS51C1100 Datasheet
2Mb / 50P
   Versa 8051 MCU with 128KB of IAP/ISP Flash
logo
Ramtron International C...
VRS51L1050 RAMTRON-VRS51L1050 Datasheet
504Kb / 49P
   Versa 8051 3.3V MCU with 64KB of IAP/ISP Flash
VRS51L2070 RAMTRON-VRS51L2070 Datasheet
3Mb / 99P
   High-Performance Versa 8051 MCU
logo
List of Unclassifed Man...
VMX1C1016 ETC1-VMX1C1016 Datasheet
3Mb / 76P
   Versa Mix 8051 Mixed-Signal MCU
VMX51C900 ETC1-VMX51C900 Datasheet
2Mb / 55P
   Versa Mix 8051 MCU with LCD Controller and ADC
VMX1C1020 ETC1-VMX1C1020 Datasheet
3Mb / 80P
   Versa Mix 8051 Mixed-Signal MCU
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.NET
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com