NRF9E5 NORDIC SEMICONDUCTOR, NRF9E5 Datasheet - Page 62

• Manufacturer Part Number: NRF9E5
• Description: TRX, 430-928MHZ, MCU/ADC/PWM, SMD
• Manufacturer: NORDIC SEMICONDUCTOR

Specifications of NRF9E5

• Receiving Current: 12.5mA
• Transmitting Current: 30mA
• Data Rate: 50Kbps
• Frequency Range: 430MHz To 928MHz
• Modulation Type: GFSK
• Rf Ic Case Style: QFN
• No. Of Pins: 32
• Supply Voltage Range: 1.9V To
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PRODUCT SPECIFICATION
nRF9E5 Single Chip Transceiver with Embedded Microcontroller and ADC
18 MICROCONTROLLER
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.
18.1 Memory Organization
18.1.1 Program Memory/Data Memory
The nRF9E5 has 4k bytes of program memory available for user programs located at the
bottom of the address space as shown in Figure 17. 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.
18.1.2 Internal Data Memory
The Internal Data Memory, illustrated in Figure 17, consists of:
The lower 32 bytes form four banks of eight registers (R0–R7). Two bits on the program
status word (PSW) select which bank is in use. The next sixteen bytes form a block of
bit-addressable memory space at bit addresses 0x00–0x7F. All of the bytes in the lower
128 bytes are accessible through direct or indirect addressing. The SFRs and the upper
128 bytes of RAM share the same address range (0x80-0xFF). However, the actual
Main office: Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway -Phone [phone] - Fax [phone]
Revision: 1.3
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).
128 special function registers (SFRs) accessible through direct addressing.
FFFFh
0FFFh
81FFh
8000h
0000h
Program memory/Data
Memory (ERAM)
Program/data memory.
Accessible with movc and
movx.
Boot loader
Figure 17 Memory Map and Organization.
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Upper
128
bytes.
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
June 2006