OM13013,598 NXP Semiconductors, OM13013,598 Datasheet - Page 286
OM13013,598
Manufacturer Part Number
OM13013,598
Description
BOARD DEMO IAR LPC1227 JLINKLITE
Manufacturer
NXP Semiconductors
Series
-r
Specifications of OM13013,598
Design Resources
LPC122x-SK Brd Schematic
Processor To Be Evaluated
LPC1227
Processor Series
LPC122x
Data Bus Width
32 bit
Interface Type
UART, SSP, SPI, I2C
Cpu Core
ARM Cortex-M0
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Operating Supply Voltage
3 V to 3.6 V
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
568-6885
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17.9 Watchdog timing examples
UM10441
User manual
Fig 47. Early Watchdog Feed with Windowed Mode Enabled
WDCLK / 4
Conditions :
WINDOW
WARNINT
TC
Early Feed
Watchdog
Watchdog
Counter
The following figures illustrate several aspects of Watchdog Timer operation is shown
below in
Reset
Event
Fig 46. Watchdog block diagram
= 0x1200
= 0x3FF
= 0x2000
Figure
125A
wd_clk
All information provided in this document is subject to legal disclaimers.
MOD
47.
register
1259
1258
Rev. 1 — 15 February 2011
feed sequence
detect and
FEED
protection
WDPROTECT
(MOD
1257
Chapter 17: LPC122x Windowed Watchdog Timer (WWDT)
[ 4])
feed error
÷4
range
( MOD
in
WDTOF
feed ok
WINDOW
compare
compare
underflow
[2])
0
24-bit down counter
(MOD
WDINT
TC
interrupt
compare
WDTV
[3])
WDINTVAL
compare
WDRESET
(MOD
enable count
[1])
feed ok
(MOD
shadow bit
WDEN
[0])
chip reset
watchdog
UM10441
interrupt
© NXP B.V. 2011. All rights reserved.
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