nRF24LE1 Nordic VLSI, nRF24LE1 Datasheet - Page 62

• Manufacturer Part Number: nRF24LE1
• Manufacturer: Nordic VLSI

nRF24LE1 Preliminary Product Specification
The MCU has 64 Kbytes of separate address space for code and data, an area of 256 byte for internal data
(IRAM) and an area of 128 byte for Special Function Registers (SFR).
The nRF24LE1 memory blocks has a default setting of 16 Kbytes program memory (flash), 1 Kbytes of
data memory (SRAM) and 2 blocks (1 Kbytes standard endurance/512 bytes extended endurance) of non-
volatile data memory (flash), see default memory map in
sizes can be re-configured based on application needs.
The lower 128 bytes of the IRAM contains work registers (0x00 - 0x1F) and bit addressable memory (0x20
- 0x2F). The upper half can only be accessed by indirect addressing.
The lowest 32 bytes of the IRAM form four banks, each consisting of eight registers (R0 - R7). Two bits of
the program memory status word (PSW) select which bank is used. The next 16 bytes of memory form a
block of bit-addressable memory, accessible through bit addresses 0x00 - 0x7F.
Revision 1.1
5
0xFC00
0xFBFF
0xFFFF
0xFA00
0x03FF
0x0200
0x01FF
0x8000
0x0000
(XDATA, accessible by MOVX)
Memory and I/O organization
DataNonRetentive (SRAM)
DataRetentive (SRAM)
Extended endurance
NV Data Memory
NV Data Memory
Data Space
512 Byte
512byte
512byte
1 kbyte
0xFFFF
0x3FFF
0x8000
0x0000
Figure 30. Memory map
(accessible by MOVC)
Program memory (Flash)
62 of 191
Code Space
16 kbyte
Figure
30.. The program and NVM memory block
0xFF
0x7F
0x80
0x00
direct and indirect
addressing only
Accessible by
Accessible by
addressing
indirect
IRAM
direct addressing
Accessible by
Special Funtion
SFR
only
Registers
0xFF
0x80