LPC1769FBD100,551 NXP Semiconductors, LPC1769FBD100,551 Datasheet - Page 506

• Manufacturer Part Number: LPC1769FBD100,551
• Description: IC ARM CORTEX MCU 512K 100-LQFP
• Manufacturer: NXP Semiconductors
• Series: LPC17xxr

Specifications of LPC1769FBD100,551

• Program Memory Type: FLASH
• Program Memory Size: 512KB (512K x 8)
• Package / Case: 100-LQFP
• Core Processor: ARM® Cortex-M3™
• Core Size: 32-Bit
• Speed: 120MHz
• Connectivity: CAN, Ethernet, I²C, IrDA, Microwire, SPI, SSI, UART/USART, USB OTG
• Peripherals: Brown-out Detect/Reset, DMA, I²S, Motor Control PWM, POR, PWM, WDT
• Number Of I /o: 70
• Ram Size: 64K x 8
• Voltage - Supply (vcc/vdd): 2.4 V ~ 3.6 V
• Data Converters: A/D 8x12b, D/A 1x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: LPC17
• Core: ARM Cortex M3
• Data Bus Width: 32 bit
• Data Ram Size: 64 KB
• Interface Type: Ethernet, USB, OTG, CAN
• Maximum Clock Frequency: 120 MHz
• Number Of Programmable I/os: 70
• Number Of Timers: 4
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: MDK-ARM, RL-ARM, ULINK2, MCB1760, MCB1760U, MCB1760UME
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 12 bit, 8 Channel
• On-chip Dac: 10 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 622-1005 - USB IN-CIRCUIT PROG ARM7 LPC2K
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 568-4966; 935290522551

NXP Semiconductors
Table 439. System Timer Control and status register (STCTRL - 0xE000 E010) bit description
Table 440. System Timer Reload value register (STRELOAD - 0xE000 E014) bit description
Table 441. System Timer Current value register (STCURR - 0xE000 E018) bit description
UM10360
User manual
Bit
15:3
16
31:17
Bit
23:0
31:24
Bit
23:0
31:24
Symbol
-
COUNTFLAG
-
Symbol
RELOAD
-
Symbol
CURRENT
-
23.5.2 System Timer Reload value register (STRELOAD - 0xE000 E014)
23.5.3 System Timer Current value register (STCURR - 0xE000 E018)
23.5.4 System Timer Calibration value register (STCALIB - 0xE000 E01C)
The STRELOAD register is set to the value that will be loaded into the System Tick Timer
whenever it counts down to zero. This register is loaded by software as part of timer
initialization. The STCALIB register may be read and used as the value for STRELOAD if
the CPU or external clock is running at the frequency intended for use with the STCALIB
value.
The STCURR register returns the current count from the System Tick counter when it is
read by software.
The STCALIB register contains a value that is initialized by the Boot Code to a factory
programmed value that is appropriate for generating an interrupt every 10 milliseconds if
the System Tick Timer is clocked at a frequency of 100 MHz. This is the intended use of
the System Tick Timer by ARM. It can be used to generate interrupts at other frequencies
by selecting the correct reload value.
Description
Reserved, user software should not write ones to reserved bits. The
value read from a reserved bit is not defined.
System Tick counter flag. This flag is set when the System Tick counter
counts down to 0, and is cleared by reading this register.
Reserved, user software should not write ones to reserved bits. The
value read from a reserved bit is not defined.
Description
This is the value that is loaded into the System Tick counter when it
counts down to 0.
Reserved, user software should not write ones to reserved bits. The
value read from a reserved bit is not defined.
Description
Reading this register returns the current value of the System Tick
counter. Writing any value clears the System Tick counter and the
COUNTFLAG bit in STCTRL.
Reserved, user software should not write ones to reserved bits. The
value read from a reserved bit is not defined.
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 19 August 2010
Chapter 23: LPC17xx System Tick Timer
UM10360
© NXP B.V. 2010. All rights reserved.
Reset value
NA
0
NA
Reset value
0
NA
Reset value
0
NA
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