NRF9E5 NORDIC SEMICONDUCTOR, NRF9E5 Datasheet - Page 58

• 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
16.7.2 Watchdog Reset
If the Watchdog reset signal goes active, nRF9E5 enters the same reset sequence as for
power-on reset. That is, the internal voltage generators and oscillators start up, the SFRs
are initialized to their reset values, as listed in Table 62, and thereafter the CPU begins
program execution at the standard reset vector address 0x0000. The startup time from
watchdog reset is somewhat shorter; expect a variation from 0.4 to 2ms depending on
processing, temperature and supply voltage.
16.7.3 Program Reset Address
The program reset address is controlled by the RSTREAS register, SFR 0xB1, see Table
48This register shows which reset source that caused the last reset, and provides a
choice of two different program start addresses. The default value is power-on reset,
which starts the boot loader, while a watchdog reset does not reboot and restarts at
address 0 of the already loaded program.
Main office: Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway -Phone [phone] - Fax [phone]
Revision: 1.3
Addr
SFR
(hex)
B1
R/W
R/W
#bit
2
Table 48 Reset control register - SFR 0xB1.
Init
(hex)
00
Name
RSTREAS
Page 58 of 108
Function
bit 0: Reason for last reset
bit 1: Use IROM for reset vector
0: POR
1: Any other reset source
0: Reset vectors to 0x0000.
1: Reset vectors to 0x8000.
June 2006