Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

AT89S52-24SC Datasheet(PDF) 23 Page - ATMEL Corporation

Part No. AT89S52-24SC
Description  8-bit Microcontroller with 8K Bytes In-System Programmable Flash
Download  39 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  ATMEL [ATMEL Corporation]
Homepage  http://www.atmel.com
Logo 

AT89S52-24SC Datasheet(HTML) 23 Page - ATMEL Corporation

Zoom Inzoom in Zoom Outzoom out
 23 / 39 page
background image
23
1919C–MICRO–3/05
AT89S52
22. Programming Interface – Parallel Mode
Every code byte in the Flash array can be programmed by using the appropriate combination of
control signals. The write operation cycle is self-timed and once initiated, will automatically time
itself to completion.
Most major worldwide programming vendors offer support for the Atmel AT89 microcontroller
series. Please contact your local programming vendor for the appropriate software revision.
Notes:
1. Each PROG pulse is 200 ns - 500 ns for Chip Erase.
2. Each PROG pulse is 200 ns - 500 ns for Write Code Data.
3. Each PROG pulse is 200 ns - 500 ns for Write Lock Bits.
4. RDY/BSY signal is output on P3.0 during programming.
5. X = don’t care.
Table 22-1.
Flash Programming Modes
Mode
VCC
RST
PSEN
ALE/
PROG
EA/
VPP
P2.6
P2.7
P3.3
P3.6
P3.7
P0.7-0
Data
P2.4-0
P1.7-0
Address
Write Code Data
5V
H
L
(2)
12V
L
HHHH
DIN
A12-8
A7-0
Read Code Data
5V
H
L
H
H
L
L
L
H
H
D
OUT
A12-8
A7-0
Write Lock Bit 1
5V
H
L
(3)
12V
HHHHH
X
X
X
Write Lock Bit 2
5V
H
L
(3)
12V
H
H
H
L
L
X
X
X
Write Lock Bit 3
5V
H
L
(3)
12V
H
L
H
H
L
X
X
X
Read Lock Bits
1, 2, 3
5V
H
L
H
H
H
H
L
H
L
P0.2,
P0.3,
P0.4
XX
Chip Erase
5V
H
L
(1)
12V
HL
HL
L
X
X
X
Read Atmel ID
5V
H
L
H
H
LLLLL
1EH
X 0000
00H
Read Device ID
5V
H
L
H
H
LLLLL
52H
X 0001
00H
Read Device ID
5V
H
L
H
H
LLLLL
06H
X 0010
00H


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 


Datasheet Download




Link URL




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

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   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