U3600BM_05 Datasheet, PDF (17/44 Pages) ATMEL Corporation – Single-chip Cordless Telephone IC

U3600BM
7. Electrical Characteristics (Continued)
T_amb = +25°C, VRF = VAF = RFOVB = 3.6V, all bits set to “0”, unless otherwise specified. Test circuit, see Figure 8-1 on page 18.
Parameters
Test Conditions
Symbol Min.
Typ.
Max.
Unit
Note:
The tx conversion gain of the RF transmitter is somehow dependent on temperature. This is determined by the fundamental
principle of this circuitry. Means have been taken inside the limiter amplifier, being in the signal path before MODIN, which are
able to completely compensate this temperature behavior.
Logical Part
Inputs: C, D
Low voltage input
High voltage input
Input leakage current
(0 < VI < VDD)
Vil
Vih
0.8 × V_D
D
Ii
–1
0.2 × V_DD
+5
µA
Input leakage current
Pin XCK (0 < VI < VDD)
–5
+5
µA
Serial bus (Figure 8-2)
Data set-up time
Data hold time
Clock low time
Clock high time
Hold time before transfer
condition
Data low pulse on transfer
condition
Data high pulse on transfer
condition
tsud
0.1
µs
thd
0
µs
tcl
2
µs
tch
2
µs
teon
0.1
µs
teh
0.2
µs
teoff
0.2
µs
8. Fine Adjustment of the Oscillator Frequency
To set the frequency of the oscillator exact to 11.15 MHz, the frequency is adjustable in 8 steps, by adding 3 different internal capacities
the frequency could be reduced.
Parameters
Test Conditions/Pins
Min.
Typ.
Max.
Unit
Oscillator frequency without
reduction
FAOS (0:2) = 0
11.15
+∆
MHz
Changing of oscillator frequency
with FOSC reduction
FAOS2 FAOS1 FAOS0
00
1
01
0
10
0
10
1
140
280
560
Hz
700
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