Electronic Components Datasheet Search
  New Zealand  ▼
ALLDATASHEET.CO.NZ

X  

Preview PDF HTML

P87CL52X2 Datasheet(PDF) 42 Page - NXP Semiconductors

Part # P87CL52X2
Description  80C51 8-bit microcontroller family
PDF  47 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

P87CL52X2 Datasheet(HTML) 42 Page - NXP Semiconductors

Back Button P87CL52X2 Datasheet HTML 38Page - NXP Semiconductors P87CL52X2 Datasheet HTML 39Page - NXP Semiconductors P87CL52X2 Datasheet HTML 40Page - NXP Semiconductors P87CL52X2 Datasheet HTML 41Page - NXP Semiconductors P87CL52X2 Datasheet HTML 42Page - NXP Semiconductors P87CL52X2 Datasheet HTML 43Page - NXP Semiconductors P87CL52X2 Datasheet HTML 44Page - NXP Semiconductors P87CL52X2 Datasheet HTML 45Page - NXP Semiconductors P87CL52X2 Datasheet HTML 46Page - NXP Semiconductors Next Button
Zoom Inzoom in Zoom Outzoom out
 42 / 47 page
background image
Philips Semiconductors
Product data
P87CL52X2/54X2
80C51 8-bit microcontroller family
8K/16K OTP 256 bytes RAM ROMless low voltage
(1.8 V to 3.3 V), low power, high speed (33 MHz)
2003 May 14
42
Table 8. EPROM Programming Modes
MODE
RST
PSEN
ALE/PROG
EA/VPP
P2.7
P2.6
P3.7
P3.6
P3.3
Read signature
1
0
1
1
0
0
0
0
X
Program code data
1
0
0*
VPP
1
0
1
1
X
Verify code data
1
0
1
1
0
0
1
1
X
Pgm encryption table
1
0
0*
VPP
1
0
1
0
X
Pgm security bit 1
1
0
0*
VPP
1
1
1
1
X
Pgm security bit 2
1
0
0*
VPP
1
1
0
0
X
Pgm security bit 3
1
0
0*
VPP
0
1
0
1
X
Program to 6-clock mode
1
0
0*
VPP
0
0
1
0
0
Verify 6-clock4
1
0
1
1
e
0
0
1
1
Verify security bits5
1
0
1
1
e
0
1
0
X
NOTES:
1. ‘0’ = Valid low for that pin, ‘1’ = valid high for that pin.
2. VPP = 12.75 V ±0.25 V.
3. VCC = 5 V±10% during programming and verification.
4. Bit is output on P0.4 (1 = 12x, 0 = 6x).
5. Security bit one is output on P0.7.
Security bit two is output on P0.6.
Security bit three is output on P0.3.
*
ALE/PROG receives 5 programming pulses for code data (also for user array; 5 pulses for encryption or security bits) while VPP is held at
12.75 V. Each programming pulse is low for 100
µs (±10 µs) and high for a minimum of 10 µs.
Table 9. Program Security Bits for EPROM Devices
PROGRAM LOCK BITS1, 2
SB1
SB2
SB3
PROTECTION DESCRIPTION
1
U
U
U
No Program Security features enabled. (Code verify will still be encrypted by the Encryption Array if
programmed.)
2
P
U
U
MOVC instructions executed from external program memory are disabled from fetching code bytes
from internal memory, EA is sampled and latched on Reset, and further programming of the EPROM
is disabled.
3
P
P
U
Same as 2, also verify is disabled.
4
P
P
P
Same as 3, external execution is disabled. Internal data RAM is not accessible.
NOTES:
1. P – programmed. U – unprogrammed.
2. Any other combination of the security bits is not defined.



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 41 42 43 44 45 46 47


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   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