ST72521 STMICROELECTRONICS [STMicroelectronics], ST72521 Datasheet - Page 174
ST72521
Manufacturer Part Number
ST72521
Description
8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, FIVE TIMERS, SPI, SCI, I2C, CAN INTERFACE
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.ST72521.pdf
(211 pages)
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ST72521
CLOCK AND TIMING CHARACTERISTICS (Cont’d)
Notes:
1. Resonator characteristics given by the ceramic resonator manufacturer.
2. t
quick V
3. Resonators all have different characteristics. Contact the manufacturer to obtain the appropriate values of external
components and to verify oscillator performance.
4. 3rd overtone resonators require specific validation by the resonator manufacturer.
174/211
Oscil.
SU(OSC)
MP
MS
HS
LP
DD
ramp-up from 0 to 5V (<50 s).
is the typical oscillator start-up time measured between V
CSA2.00MG
CSA4.00MG
CSA8.00MTZ
CSA16.00MXZ040
Reference
Typical Ceramic Resonators (information for guidance only)
3)
4)
16MHz
Freq.
2MHz
4MHz
8MHz
f
f
f
f
OSC
OSC
OSC
OSC
=[±0.5%
=[±0.5%
=[±0.5%
=[±0.5%
tolerance
tolerance
tolerance
tolerance
Characteristic
,±0.3%
,±0.3%
,±0.5%
,±0.3%
DD
=2.8V and the fetch of the first instruction (with a
Ta
Ta
Ta
Ta
±0.3%
±0.3%
±0.3%
±0.3%
1)
aging
aging
aging
aging
±x.x%
±x.x%
±x.x%
±x.x%
correl
correl
correl
correl
] 22
] 22
] 33
] 33
[pF]
C
L1
[pF]
C
22
22
33
33
L2
t
[ms]
SU(osc)
0.7
4
2
1
2)
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