NRF9E5 NORDIC SEMICONDUCTOR, NRF9E5 Datasheet - Page 51

• 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
15.6 Interrupt Latency
Interrupt response time depends on the current state of the CPU. The fastest response
time is five instruction cycles: one to detect the interrupt, and four to perform the
LCALL to the ISR. The maximum latency (thirteen instruction cycles) occurs when the
CPU is currently executing an RETI instruction followed by a MUL or DIV instruction.
The thirteen instruction cycles in this case are: one to detect the interrupt, three to
complete the RETI, five to execute the DIV or MUL, and four to execute the LCALL to
the ISR.
For the maximum latency case, the response time is 13 x 4 = 52clock cycles.
15.7 Interrupt Latency from Power Down State.
The nRF9E5 may be set into Power Down state by writing a non zero value to SFR
0xB6, register CK_CTRL. The CPU will then perform a controlled shutdown of clock
and power regulator depending on what mode was selected. The system can only be
restarted from an RTC wakeup, a GPIO wakeup or a Watchdog reset. If a wakeup
interrupt is enabled, the startup time for regulators and clocks will be added to the
interrupt
latency.
See
17.2.1
Main office: Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway -Phone [phone] - Fax [phone]
Revision: 1.3
Page 51 of 108
June 2006