Datasheet
Table Of Contents
- RP2040 Datasheet
- Colophon
- Chapter 1. Introduction
- Chapter 2. System Description
- 2.1. Bus Fabric
- 2.2. Address Map
- 2.3. Processor subsystem
- 2.4. Cortex-M0+
- 2.5. DMA
- 2.6. Memory
- 2.7. Boot Sequence
- 2.8. Bootrom
- 2.9. Power Supplies
- 2.10. Core Supply Regulator
- 2.11. Power Control
- 2.12. Chip-Level Reset
- 2.13. Power-On State Machine
- 2.14. Subsystem Resets
- 2.15. Clocks
- 2.16. Crystal Oscillator (XOSC)
- 2.17. Ring Oscillator (ROSC)
- 2.18. PLL
- 2.19. GPIO
- 2.20. Sysinfo
- 2.21. Syscfg
- 2.22. TBMAN
- Chapter 3. PIO
- Chapter 4. Peripherals
- 4.1. USB
- 4.2. UART
- 4.3. I2C
- 4.3.1. Features
- 4.3.2. IP Configuration
- 4.3.3. I2C Overview
- 4.3.4. I2C Terminology
- 4.3.5. I2C Behaviour
- 4.3.6. I2C Protocols
- 4.3.7. Tx FIFO Management and START, STOP and RESTART Generation
- 4.3.8. Multiple Master Arbitration
- 4.3.9. Clock Synchronization
- 4.3.10. Operation Modes
- 4.3.11. Spike Suppression
- 4.3.12. Fast Mode Plus Operation
- 4.3.13. Bus Clear Feature
- 4.3.14. IC_CLK Frequency Configuration
- 4.3.15. DMA Controller Interface
- 4.3.16. Operation of Interrupt Registers
- 4.3.17. List of Registers
- 4.4. SPI
- 4.5. PWM
- 4.6. Timer
- 4.7. Watchdog
- 4.8. RTC
- 4.9. ADC and Temperature Sensor
- 4.10. SSI
- 4.10.1. Overview
- 4.10.2. Features
- 4.10.3. IP Modifications
- 4.10.4. Clock Ratios
- 4.10.5. Transmit and Receive FIFO Buffers
- 4.10.6. 32-Bit Frame Size Support
- 4.10.7. SSI Interrupts
- 4.10.8. Transfer Modes
- 4.10.9. Operation Modes
- 4.10.10. Partner Connection Interfaces
- 4.10.11. DMA Controller Interface
- 4.10.12. APB Interface
- 4.10.13. List of Registers
- Chapter 5. Electrical and Mechanical
- Appendix A: Register Field Types
- Appendix B: Errata
- Appendix C: Documentation Release History
Operation Description Assembler Cycles
Bit clear
BICS Rd, Rd, Rm
1
Move NOT
MVNS Rd, Rm
1
AND test
TST Rn, Rm
1
Shift Logical shift left by immediate
LSLS Rd, Rm, #<shift>
1
Logical shift left by register
LSLS Rd, Rd, Rs
1
Logical shift right by immediate
LSRS Rd, Rm, #<shift>
1
Logical shift right by register
LSRS Rd, Rd, Rs
1
Arithmetic shift right
ASRS Rd, Rm, #<shift>
1
Arithmetic shift right by register
ASRS Rd, Rd, Rs
1
Rotate Rotate right by register
RORS Rd, Rd, Rs
1
Load Word, immediate offset
LDR Rd, [Rn, #<imm>]
2 or 1
a
Halfword, immediate offset
LDRH Rd, [Rn, #<imm>]
2 or 1
a
Byte, immediate offset
LDRB Rd, [Rn, #<imm>]
2 or 1
a
Word, register offset
LDR Rd, [Rn, Rm]
2 or 1
a
Halfword, register offset
LDRH Rd, [Rn, Rm]
2 or 1
a
Signed halfword, register offset
LDRSH Rd, [Rn, Rm]
2 or 1
a
Byte, register offset
LDRB Rd, [Rn, Rm]
2 or 1
a
Signed byte, register offset
LDRSB Rd, [Rn, Rm]
2 or 1
a
PC-relative
LDR Rd, <label>
2 or 1
a
SP-relative
LDR Rd, [SP, #<imm>]
2 or 1
a
Multiple, excluding base
LDM Rn!, {<loreglist>}
1+N
b
Multiple, including base
LDM Rn, {<loreglist>}
1+N
b
Store Word, immediate offset
STR Rd, [Rn, #<imm>]
2 or 1
a
Halfword, immediate offset
STRH Rd, [Rn, #<imm>]
2 or 1
a
Byte, immediate offset
STRB Rd, [Rn, #<imm>]
2 or 1
a
Word, register offset
STR Rd, [Rn, Rm]
2 or 1
a
Halfword, register offset
STRH Rd, [Rn, Rm]
2 or 1
a
Byte, register offset
STRB Rd, [Rn, Rm]
2 or 1
a
SP-relative
STR Rd, [SP, #<imm>]
2 or 1
a
Multiple
STM Rn!, {<loreglist>}
1+N
b
Push Push
PUSH {<loreglist>}
1+N
b
Push with link register
PUSH {<loreglist>, LR}
1+N
c
Pop Pop
POP {<loreglist>}
1+N
b
Pop and return
POP {<loreglist>, PC}
3+N
c
Branch Conditional
B<cc> <label>
1 or 2
d
Unconditional
B <label>
2
RP2040 Datasheet
2.4. Cortex-M0+ 70