Computime Limited CT-EM2503 ユーザーズマニュアル
CT-EM250
ZigBee-Ready RF Transceiver Modules
Computime Ltd. All rights reserved
Confidential
Page 3 of 15
Absolute Maximum Ratings
Parameter
Test Conditions
Min.
Max.
Unit
Regulator voltage (VDD_PADS)
- 0.3
3.6
V
Voltage on any GPIO[16:0], SIF_CLK,
SIF_MISO, SIF_MOSI, nSIF_LOAD, OSC32A,
OSC32B, nRESET,
-
0.3
VDD_PADS+
0.3
V
Storage temperature
- 40
+ 140
°C
Under no circumstances should the absolute maximum ratings given above be violated. Stress
exceeding one or more of the limiting values may cause permanent damage to the device.
Recommended Operating Conditions
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
Regulator input voltage (VDD_PADS)
2.1
3.6
V
Core input voltage (VDD_24MHZ, VDD_VCO,
VDD_RF, VDD_IF, VDD_PADSA,
VDD_FLASH, VDD_PRE, VDD_SYNTH,
VDD_CORE)
1.7
1.8
1.9
V
Temperature range
- 40
+ 85
°C
Electrical Specifications
T=25 ℃, VCC = 3.0V, fo=2450Mhz, if nothing else stated.
Parameter
Parameter
Min.
Typ. Max
Unit
Condition / Note
Operating frequency
2405
2480
M
Programmable in 5 MHz steps for
IEEE 802.15.4 compliance
Number of channels
16
For IEEE 802.15.4 compliance
Channel spacing
5
MHz
For IEEE 802.15.4 compliance
Input/output impedance
50
Ohm
Data rate
250
kbit/s
DSSS chip rate
2
Mc/s
Frequency stability
+/-40
ppm
Transmit power
-32
5
dBm
Programmable from firmware
Harmonics
2nd harmonic
TBD
dBm
3rd harmonic
TBD
dBm