ATAM862-4_06 Datasheet, PDF (103/110 Pages) ATMEL Corporation – Microcontroller with UHF ASK/FSK Transmitter

ATAM862-4
28. AC Characteristics (Continued)
Supply voltage V_DD = 1.8 to 4.0 V, V_SS = 0 V, T_amb = 25° C unless otherwise specified.
Parameters
Test Conditions
Symbol
Min.
Typ.
Max.
32-kHz Crystal Oscillator (Operating Range V_DD = 2.0 V to 4.0 V)
Frequency
Start-up time
Stability
f_X
32.768
t_SQ
0.5
∆f/f
-10
10
Integrated input/output capacitances
(configurable)
C_IN/C_OUT programmable
External 32-kHz Crystal Parameters
C_IN
C_OUT
0, 2, 5, 7, 10 or 12
0, 2, 5, 7, 10 or 12
Crystal frequency
Serial resistance
f_X
32.768
RS
30
50
Static capacitance
C0
1.5
Dynamic capacitance
C1
3
External 4-MHz Crystal Parameters
Crystal frequency
Serial resistance
f_X
4.0
RS
40
150
Static capacitance
C0
1.4
3
Dynamic capacitance
C1
3
EEPROM
Operating current during erase/write
cycle
I_WR
600
1300
Endurance
Data erase/write cycle time
Data retention time
Power-up to read operation
Power-up to write operation
Program EEPROM
Serial Interface
Erase-/write cycles
T_amb = 125° C
For 16-bit access
T_amb = 125° C
Erase-/write cycles, T_amb = 0 to 40° C
E_D
E_D
t_DEW
t_DR
t_DR
t_PUR
t_PUW
n_EW
500000 1000000
10000 20000
9
13
100
1
0.2
0.2
100
1000
SCL clock frequency
f_{SC_MCL}
100
500
Unit
kHz
s
ppm
pF
pF
kHz
kΩ
pF
fF
MHz
W
pF
fF
µA
Cycles
Cycles
ms
Years
Years
ms
ms
Cycles
kHz
29. Crystal Characteristics
Figure 29-1. Crystal Equivalent Circuit
OSCIN
SCLIN
OSCOUT
SCLOUT
Equivalent
circuit
L ^C1 RS
C0
4551F–4BMCU–05/06
103