Datasheet
LPC55S6x All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2019. All rights reserved.
Product data sheet Rev. 1.0 — 26 February 2019 44 of 123
NXP Semiconductors
LPC55S6x
32-bit ARM Cortex-M33 microcontroller
7.20 AHB peripherals
Table 9 provides details of the addresses for AHB peripherals. AHB peripherals have both
secure and non-secure access possibilities.
7.21 System control
7.21.1 Clock sources
The LPC55S6x supports 2 external and 3 internal clock sources:
• Internal Free Running Oscillator (FRO). This oscillator provides a selectable 96 MHz
output, and a 12 MHz output (divided down from the selected higher frequency) that
can be used as a system clock. The FRO is trimmed to +/- 2% accuracy over the
Table 9. AHB peripheral memory map
AHB
port
Non-secure
base address
Secure
base address
Peripheral
8 0x4008 2000 0x5008 2000 DMA0 registers.
0x4008 4000 0x5008 4000 FS USB Device registers.
0x4008 5000 0x5008 5000 SCTimer/PWM.
0x4008 6000 0x5008 6000 Flexcomm Interface 0.
0x4008 7000 0x5008 7000 Flexcomm Interface 1.
0x4008 8000 0x5008 8000 Flexcomm Interface 2.
0x4008 9000 0x5008 9000 Flexcomm Interface 3.
0x4008 A000 0x5008 A000 Flexcomm Interface 4.
0x4008 B000 0x5008 B000 Inter-CPU Mailbox.
0x4008 C000 0x5008 C000 High Speed GPIO.
9 0x4009 4000 0x5009 4000 HS USB device registers.
0x4009 5000 0x5009 5000 CRC Engine.
0x4009 6000 0x5009 6000 Flexcomm Interface 5.
0x4009 7000 0x5009 7000 Flexcomm Interface 6.
0x4009 8000 0x5009 8000 Flexcomm Interface 7.
0x4009 B000 0x5009 B000 SDIO registers.
0x4009 C000 0x5009 C000 Debug Mailbox (DM-AP).
0x4009 F000 0x5009 F000 High Speed SPI.
10 0x400A 0000 0x500A 0000 ADC0.
0x400A 2000 0x500A 2000 FS USB Host registers.
0x400A 3000 0x500A 3000 HS USB Host registers.
0x400A 4000 0x500A 4000 Hash-AES registers.
0x400A 5000 0x500A 5000 Casper co-processor.
0x400A 6000 0x500A 6000 PowerQuad co-processor.
0x400A 7000 0x500A 7000 DMA1 registers.
0x400A 8000 0x500A 8000 Secure HS GPIO.
0x400A C000 0x500A C000 Security Control registers.
11 0x4010 0000 0x5010 0000 USB SRAM.