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

X  

Preview PDF HTML

ST72521 Datasheet(PDF) 137 Page - STMicroelectronics

Part # ST72521
Description  8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, FIVE TIMERS, SPI, SCI, I2C, CAN INTERFACE
PDF  211 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72521 Datasheet(HTML) 137 Page - STMicroelectronics

Back Button ST72521 Datasheet HTML 133Page - STMicroelectronics ST72521 Datasheet HTML 134Page - STMicroelectronics ST72521 Datasheet HTML 135Page - STMicroelectronics ST72521 Datasheet HTML 136Page - STMicroelectronics ST72521 Datasheet HTML 137Page - STMicroelectronics ST72521 Datasheet HTML 138Page - STMicroelectronics ST72521 Datasheet HTML 139Page - STMicroelectronics ST72521 Datasheet HTML 140Page - STMicroelectronics ST72521 Datasheet HTML 141Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 137 / 211 page
background image
ST72521
137/211
CONTROLLER AREA NETWORK (Cont’d)
BAUD RATE PRESCALER REGISTER (BRPR)
Read/Write in Standby mode
Reset Value: 00h
RJW[1:0] determine the maximum number of time
quanta by which a bit period may be shortened or
lengthened to achieve resynchronization.
tRJW = tCAN * (RJW + 1)
BRP[5:0] determine the CAN system clock cycle
time or time quanta which is used to build up the in-
dividual bit timing.
tCAN = tCPU * (BRP + 1)
Where tCPU = time period of the CPU clock.
The resulting baud rate can be computed by the for-
mula:
Note: Writing to this register is allowed only in
Standby mode to prevent any accidental CAN pro-
tocol violation through programming errors.
BIT TIMING REGISTER (BTR)
Read/Write in Standby mode
Reset Value: 23h
BS2[2:0] determine the length of Bit Segment 2.
tBS2 = tCAN * (BS2 + 1)
BS1[3:0] determine the length of Bit Segment 1.
tBS1 = tCAN * (BS1 + 1)
Note: Writing to this register is allowed only in
Standby mode to prevent any accidental CAN pro-
tocol violation through programming errors.
PAGE SELECTION REGISTER (PSR)
Read/Write
Reset Value: 00h
PAGE[2:0] determine which buffer or filter page is
mapped at addresses 0010h to 001Fh.
70
RJW1
RJW0
BRP5
BRP4
BRP3
BRP2
BRP1
BRP0
BR
1
t
CPU
BR P
1
+
()
×
BS1
BS2
3
++
()
×
------------------------------------------------------------------------------------------------
=
70
0
BS22
BS21
BS20
BS13
BS12
BS11
BS10
70
00
000
PAGE
2
PAGE
1
PAGE
0
PAGE2
PAGE1
PAGE0
Page Title
0
0
0
Diagnosis
00
1
Buffer 1
01
0
Buffer 2
01
1
Buffer 3
1
0
0
Filters
1
0
1
Reserved
1
1
0
Reserved
1
1
1
Reserved



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 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100  ...More


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