LPC1113FBD48/301,1 NXP Semiconductors, LPC1113FBD48/301,1 Datasheet - Page 12

• Manufacturer Part Number: LPC1113FBD48/301,1
• Description: IC MCU 32BIT 24KB FLASH 48LQFP
• Manufacturer: NXP Semiconductors
• Series: LPC1100r

Specifications of LPC1113FBD48/301,1

• Program Memory Type: FLASH
• Program Memory Size: 24KB (24K x 8)
• Package / Case: 48-LQFP
• Core Processor: ARM Cortex-M0
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 42
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: LPC11
• Core: ARM Cortex M0
• Data Bus Width: 32 bit
• Data Ram Size: 8 KB
• Interface Type: I2C, SPI, UART
• Number Of Programmable I/os: 28
• Operating Supply Voltage: 1.8 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: MDK-ARM, RL-ARM, ULINK2
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• Package: 48LQFP
• Device Core: ARM Cortex M0
• Family Name: LPC1100
• Maximum Speed: 50 MHz
• Number Of Timers: 4
• 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: 568-4953; 935290777151

IRQVECTOR
IRQHandler PROC
ENDP
Writing interrupt handlers
Traditional approach
STMFD sp!,{r0-r4,r12,lr}
MOV r4,#0x80000000
LDR r0,[r4,#0]
SUB sp,sp,#4
CMP r0,#1
BLEQ C_int_handler
MOV r0,#0
STR r0,[r4,#4]
ADD sp,sp,#4
LDMFD sp!,{r0-r4,r12,lr}
SUBS pc,lr,#4
Exception table
Top-level handler
– Fetch instruction to branch
– Routine handles re-entrancy
LDR
PC, IRQHandler
.
.
ARM Cortex-M family
NVIC automatically handles
ISR can be written directly in C
Faster interrupt response
WFI, sleep on exit
– Saving corruptible registers
– Exception prioritization
– Exception nesting
– Pointer to C routine at vector
– ISR is a C function
– With less software effort
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