LPC1837FET256,551 NXP Semiconductors, LPC1837FET256,551 Datasheet - Page 697

• Manufacturer Part Number: LPC1837FET256,551
• Description: Microcontrollers (MCU) 32BIT ARM CORTEX-M3 MCU 136KB SRAM
• Manufacturer: NXP Semiconductors
• Series: LPC18xxr

Specifications of LPC1837FET256,551

• Core: ARM Cortex M3
• Core Processor: ARM® Cortex-M3™
• Core Size: 32-Bit
• Speed: 150MHz
• Connectivity: CAN, EBI/EMI, Ethernet, I²C, Microwire, SD/MMC, SPI, SSI, SSP, UART/USART, USB OTG
• Peripherals: Brown-out Detect/Reset, DMA, I²S, Motor Control PWM, POR, PWM, WDT
• Number Of I /o: 80
• Program Memory Size: 1MB (1M x 8)
• Program Memory Type: FLASH
• Eeprom Size: -
• Ram Size: 136K x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 3.6 V
• Data Converters: A/D 16x10b; D/A 1x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 256-LBGA
• Lead Free Status / Rohs Status: Details
• Other names: 935293795551

NXP Semiconductors
30.8 Block diagram
30.9 Watchdog timing examples
<Document ID>
User manual
Table 629. Watchdog Timer Window register (WINDOW - 0x4008 0018) bit description
The block diagram of the Watchdog is shown below in the
logic (PCLK - WDCLK) is not shown in the block diagram.
The following figures illustrate several aspects of Watchdog Timer operation is shown
below in
Bit
23:0
31:24
Fig 83. Watchdog block diagram
wd_clk
WDMOD
register
Symbol
WDWINDOW Watchdog window value.
-
Figure
feed sequence
All information provided in this document is subject to legal disclaimers.
84.
detect and
WDFEED
protection
WDPROTECT
(WDMOD[4])
Description
Reserved, user software should not write ones to reserved
bits. The value read from a reserved bit is not defined.
Rev. 00.13 — 20 July 2011
feed error
÷4
Chapter 30: LPC18xx Windowed Watchdog timer (WWDT)
range
(WDMOD[2])
in
WDTOF
feed ok
WDWIND
compare
compare
underflow
0
24-bit down counter
(WDMOD[3])
WDINT
WDTC
compare
interrupt
WDTV
WDINTVAL
compare
WDRESET
(WDMOD[1])
enable count
Figure
WDCLKSEL
feed ok
(WDMOD[0])
83. The synchronization
shadow bit
WDEN
UM10430
© NXP B.V. 2011. All rights reserved.
Reset value
0xFF FFFF
NA
chip reset
watchdog
interrupt
select
697 of 1164
clock