Datasheet

LPC15XX All information provided in this document is subject to legal disclaimers. © NXP B.V. 2014. All rights reserved.
Product data sheet Rev. 1 — 19 February 2014 23 of 99
NXP Semiconductors
LPC15xx
32-bit ARM Cortex-M3 microcontroller
8.5 SRAM
The LPC15xx contain a total 36 kB, 20 kB or 12 kB of contiguous, on-chip static RAM
memory. For each SRAM configuration, the SRAM is divided into three blocks: 2 x 16 kB +
4 kB for 36 kB SRAM, 2 x 8 kB + 4 kB for 20 kB SRAM, and 2 x 4 kB + 4 kB for 12 kB
SRAM. The bottom 16 kB, 8 kB, or 4 kB are enabled by the bootloader and cannot be
disabled. The next two SRAM blocks in each configuration can be disabled or enabled
individually in the SYSCON block to save power.
8.6 On-chip ROM
The on-chip ROM contains the boot loader and the following Application Programming
Interfaces (APIs):
• In-System Programming (ISP) and In-Application Programming (IAP) support for flash
including IAP erase page command.
• IAP support for EEPROM.
• Flash updates via USB and C_CAN supported.
• USB API (HID, CDC, and MSC drivers).
• DMA, I2C, USART, SPI, and C_CAN drivers.
• Power profiles for configuring power consumption and PLL settings.
• Power mode configuration for configuring deep-sleep, power-down, and deep
power-down modes.
• ADC drivers for analog-to-digital conversion and ADC calibration.
Table 8. LPC15xx SRAM configurations
SRAM0 SRAM1 SRAM2
LPC1549/19 (total SRAM = 36 kB)
address range 0x0200 0000 to
0x0200 3FFF
0x0200 4000 to
0x0200 7FFF
0x0200 8000 to
0x0200 8FFF
size 16 kB 16 kB 4 kB
control cannot be disabled disable/enable disable/enable
default enabled enabled enabled
LPC1548/18 (total SRAM = 20 kB)
address range 0x0200 0000 to
0x0200 1FFF
0x0200 2000 to
0x0200 3FFF
0x0200 4000 to
0x0200 4FFF
size 8 kB 8 kB 4 kB
control cannot be disabled disable/enable disable/enable
default enabled enabled enabled
LPC1547/17 (total SRAM = 12 kB)
address range 0x0200 0000 to
0x0200 0FFF
0x0200 1000 to
0x0200 1FFF
0x0200 2000 to
0x0200 2FFF
size 4 kB 4 kB 4 kB
control cannot be disabled disable/enable disable/enable
default enabled enabled enabled