nRF24E1 Nordic VLSI, nRF24E1 Datasheet - Page 65

• Manufacturer Part Number: nRF24E1
• Description: 2.4Ghz RF Transceiver With Embedded 8051 Compatible Microcontroller And 9 Input, 10 Bit ADC
• Manufacturer: Nordic VLSI

PRODUCT SPECIFICATION
The Special Function Registers (SFRs) control several of the features of the nRF24E1.
Most of the nRF24E1 SFRs are identical to the standard 8051 SFRs. However, there
are additional SFRs that control features that are not available in the standard 8051.
Table 10-9 lists the nRF24E1 SFRs and indicates which SFRs are not included in the
standard 8051 SFR space. When writing software for the nRF24E1, use equate
statements to define the SFRs that are specific to the nRF24E1 and custom
peripherals. In Table 10-9, SFR bit positions that contain a 0 or a 1 cannot be written
to and, when read, always return the value shown (0 or 1). SFR bit positions that
contain “–” are available but not used. Table 10-10 shows the value of each SFR, after
power-on reset or a watchdog reset, together with a pointer to a detailled description
of each register. Please note that any unused address in the SFR address space is
reserved and should not be written to.
Notes to Table 10-9 on next page :
(1) Not part of standard 8051 architecture.
(2) Registers unique to nRF24E1
(3) P0 and P1 differ from standard 8051
Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone [phone] - Fax [phone]
Revision: 1.0
- 0x85 DPH1 DPTR1 high byte
- 0x86 DPS
DPTR Select (LSB)
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July 2003