Download Benchmark ADC16 Datasheet

ST72334J/N, ST72314J/N, ST72124J
CLOCK AND TIMING CHARACTERISTICS (Cont’d)
16.5.3.2 Typical Ceramic Resonators
Symbol
Parameter
tSU(osc)
Conditions
Ceramic resonator start-up time
Typ
LP
2MHz
4.2
MP
4MHz
2.1
MS
8MHz
1.1
HS
16MHz
0.7
Unit
ms
Note:
tSU(OSC) is the typical oscillator start-up time measured between VDD=2.8V and the fetch of the first instruction (with a
quick VDD ramp-up from 0 to 5V (<50µs).
Figure 69. Application with Ceramic Resonator
WHEN RESONATOR WITH
INTEGRATED CAPACITORS
i2
fOSC
CL1
OSC1
RESONATOR
RF(EXT)
CL2
RF
OSC2
ST72XXX
RD
Notes:
1. Resonator characteristics given by the ceramic resonator manufacturer.
2. tSU(OSC) is the typical oscillator start-up time measured between VDD=2.8V and the fetch of the first instruction (with a
quick VDD ramp-up from 0 to 5V (<50µs).
3. The oscillator selection can be optimized in terms of supply current using an high quality resonator with small RS value.
Refer to Table 22 and Table 23 and to the ceramic resonator manufacturer’s documentation for more details.
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