LPC1112FHN33/203,5 NXP Semiconductors, LPC1112FHN33/203,5 Datasheet - Page 26
LPC1112FHN33/203,5
Manufacturer Part Number
LPC1112FHN33/203,5
Description
ARM Microcontrollers - MCU Cortex-M0 16kB flash up to 4 kB SRAM
Manufacturer
NXP Semiconductors
Datasheet
1.LPC1113FHN333035.pdf
(538 pages)
Specifications of LPC1112FHN33/203,5
Rohs
yes
Core
ARM Cortex M0
Processor Series
LPC1112
Data Bus Width
32 bit
Maximum Clock Frequency
50 MHz
Program Memory Size
16 KB
Data Ram Size
4 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
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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.
26 of 538
Reset
value
0
0x00
0x00
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