LPC1114FHN33/203,5 NXP Semiconductors, LPC1114FHN33/203,5 Datasheet - Page 26

• Manufacturer Part Number: LPC1114FHN33/203,5
• Description: ARM Microcontrollers - MCU Cortex-M0 32 kB Fl 8 kB SRAM
• Manufacturer: NXP Semiconductors

Specifications of LPC1114FHN33/203,5

• Rohs: yes
• Core: ARM Cortex M0
• Processor Series: LPC1114
• Data Bus Width: 32 bit
• Maximum Clock Frequency: 50 MHz
• Program Memory Size: 32 KB
• Data Ram Size: 8 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 1.8 V to 3.6 V
• Operating Temperature Range: - 65 C to + 150 C
• Package / Case: HVQFN-33
• Mounting Style: SMD/SMT
• Factory Pack Quantity: 260

NXP Semiconductors
UM10398
User manual
3.5.7 Internal resonant crystal control register
3.5.8 System reset status register
Table 13.
This register is used to trim the on-chip 12 MHz oscillator. The trim value is factory-preset
and written by the boot code on start-up.
Table 14.
The SYSRSTSTAT register shows the source of the latest reset event. Write a one to
clear the reset.
The POR event clears all other bits in this register. If any reset signal - for example
EXTRST - remains asserted after the POR signal is negated, then its bit is set to detected
in this register.
Bit
4:0
8:5
31:9
Bit
7:0
31:8
Symbol
DIVSEL
FREQSEL
-
Symbol
TRIM
-
Watchdog oscillator control register (WDTOSCCTRL, address 0x4004 8024) bit
description
Internal resonant crystal control register (IRCCTRL, address 0x4004 8028) bit
description
All information provided in this document is subject to legal disclaimers.
Value
0x1
0x2
0x3
0x4
0x5
0x6
0x7
0x8
0x9
0xA
0xB
0xC
0xD
0xE
0xF
-
Description
Trim value
Reserved
Rev. 12 — 24 September 2012
Chapter 3: LPC111x/LPC11Cxx System configuration (SYSCON)
Description
Select divider for Fclkana.
wdt_osc_clk = Fclkana/ (2  (1 + DIVSEL))
00000: 2  (1 + DIVSEL) = 2
00001: 2  (1 + DIVSEL) = 4
to
11111: 2  (1 + DIVSEL) = 64
Select watchdog oscillator analog output frequency
(Fclkana).
0.6 MHz
1.05 MHz
1.4 MHz
1.75 MHz
2.1 MHz
2.4 MHz
2.7 MHz
3.0 MHz
3.25 MHz
3.5 MHz
3.75 MHz
4.0 MHz
4.2 MHz
4.4 MHz
4.6 MHz
Reserved
Reset value
0x1000 0000, then
flash will reprogram
0x00
UM10398
© NXP B.V. 2012. All rights reserved.
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Reset
value
0
0x00
0x00