nRF24E2 Nordic VLSI, nRF24E2 Datasheet - Page 50

• Manufacturer Part Number: nRF24E2
• Description: Single Chip RF Transmitter + MCU + ADC NRF2402 2.4GHz RF Transmitter
• Manufacturer: Nordic VLSI

PRODUCT SPECIFICATION
The embedded microcontroller is the DW8051 MacroCell from Synopsys which is
similar to the Dallas DS80C320 in terms of hardware features and instruction-cycle
timing.
Figure 10-1 : Memory Map and Organization
The nRF24E2 has 4KB of program memory available for user programs located at the
bottom of the address space as shown in Figure 10-1. This memory also function as a
random access memory and can be accessed with the movx and movc instructions.
After power on reset the boot loader loads the user program from the external serial
EEPROM and stores it from address 0 in this memory.
The Internal Data Memory, illustrated in Figure 10-1, consists of:
Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone [phone] - Fax [phone]
Revision: 1.0
FFFFh
0FFFh
81FFh
0000h
8000h
128 bytes of registers and scratchpad memory accessible through direct or
indirect addressing (addresses 0x00–0x7F).
128 bytes of scratchpad memory accessible through indirect addressing (0x80–
0xFF).
Program memory/Data
Memory (ERAM)
Program/data memory.
Accessible with movc and
movx.
Boot loader
Upper
128
bytes.
QhtrÃ$ÂsÃ(
Lower
128
bytes.
FFh
7Fh
80h
00h
Accessible by
indirect
addressing only.
Accessible by
direct and indirect
addressing.
IRAM
Internal Data Memory
Accessible by
direct addressing
only.
SFR
Special
Function
Registers
FFh
80h
August 2003