LPC1112FHN33/202,5 NXP Semiconductors, LPC1112FHN33/202,5 Datasheet - Page 18

• Manufacturer Part Number: LPC1112FHN33/202,5
• Description: IC MCU LV 32BIT 16K FLAS 32VQFN
• Manufacturer: NXP Semiconductors
• Series: LPC1100Lr

Specifications of LPC1112FHN33/202,5

• 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: 28
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K 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
• Package / Case: 32-VQFN Exposed Pad
• Processor Series: LPC1112
• Core: ARM Cortex-M0
• Data Bus Width: 32 bit
• Data Ram Size: 4 KB
• Interface Type: I2C, UART, SPI, SSP
• Maximum Clock Frequency: 50 MHz
• Number Of Programmable I/os: 42
• Number Of Timers: 4
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details
• Other names: 568-5145

* 8051 need at least one cycle per instruction byte fetch as they only have an 8-bit interface
8-bit example
MOV
MOV
MUL
MOV
MOV
MOV
MOV
MUL
ADD
MOV
MOV
ADDC
MOV
MOV
MOV
Time: 48 clock cycles*
Code size: 48 bytes
16-bit multiply example
Consider an device with a 10-bit ADC
A, B ; 2 bytes
A, #0 ; 2 bytes
B, YL ; 3 bytes
– Basic filtering of data requires a 16-bit multiply operation
– 16-bit multiply operation is compared below
A, XL ; 2 bytes
B, YL ; 3 bytes
AB; 1 byte
R0, A; 1 byte
R1, B; 3 bytes
A, XL ; 2 bytes
B, YH ; 3 bytes
AB; 1 byte
A, R1; 1 byte
R1, A; 1 byte
R2, A; 1 byte
A, XH ; 2 bytes
MUL
ADD
MOV
MOV
ADDC
MOV
MOV
MOV
MUL
ADD
MOV
MOV
ADDC
MOV
A, B ; 2 bytes
A, R2 ; 1 bytes
A, B ; 2 bytes
A, #0 ; 2 bytes
AB; 1 byte
A, R1; 1 byte
R1, A; 1 byte
R2, A; 1 byte
A, XH ; 2 bytes
B, YH ; 3 bytes
AB; 1 byte
A, R2; 1 byte
R2, A; 1 byte
R3, A; 1 byte
16-bit example
MOV R1,&MulOp1
MOV R2,&MulOp2
MOV SumLo,R3
MOV SumHi,R4
Time: 8 clock cycles
Code size: 8 bytes
ARM Cortex-M0
MULS r0,r1,r0
Time: 1 clock cycle
Code size: 2 bytes
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