MRF39RA Datasheet, PDF (62/72 Pages) Microchip Technology – Low-Power, Integrated UHF Receiver

MRF39RA
TABLE 7-5: RECEIVER SPECIFICATION (CONTINUED)
Symbol
Description
Conditions
Min. Typ.
TS_FEI
TS_AFC
TS_RSSI
DR_RSSI
FEI sampling time
AFC response time
RSSI response time
RSSI dynamic range
Receiver is ready
Receiver is ready
Receiver is ready
AGC enabled
Min.
Max.
— 4.T_bit
— 4.T_bit
— 2.T_bit
— -115
—
0
Note 1: Set SensitivityBoost in RegTestLna to 0x2D to reduce the noise floor in the receiver.
Max.
—
—
—
—
—
Unit
—
—
—
dBm
dBm
7.4.4 DIGITAL SPECIFICATION
Table 7-6 shows the digital specification.
TABLE 7-6: DIGITAL SPECIFICATION
Operating Conditions (unless otherwise specified)
Temperature: 25°C, VDD = 3.3V, FXOSC = 32 MHz
Symbol
Description
Conditions
V_IH
V_IL
V_OH
V_OL
F_SCK
t_ch
t_cl
t_rise
t_fall
t_setup
t_hold
t_nsetup
t_nhold
t_nhigh
T_DATA
Digital input level high
Digital input level low
Digital output level high
Digital output level low
SCK frequency
SCK high time
SCK low time
SCK rise time
SCK fall time
MOSI setup time
MOSI hold time
NSS setup time
NSS hold time
NSS high time between SPI
accesses
DATA hold and setup time
—
—
IMAX = 1 mA
IMAX = -1 mA
—
—
—
—
—
From MOSI change to SCK rising edge
From SCK rising edge to MOSI change
From NSS falling edge to SCK rising
edge
From SCK falling edge to NSS rising
edge, Normal mode
—
—
Min.
0.8
—
0.9
—
—
50
50
—
—
30
60
30
100
20
250
Typ.
—
—
—
—
—
—
—
5
5
—
—
—
—
—
—
Max.
—
0.2
—
0.1
10
—
—
—
—
—
—
—
Units
VDD
VDD
VDD
VDD
MHz
ns
ns
ns
ns
ns
ns
ns
—
ns
—
ns
—
ns
DS40001778B-page 62
 2015 Microchip Technology Inc.