SH3003 Datasheet, PDF (5/30 Pages) Semtech Corporation – MicroBuddy® Support IC for Microcontrollers

SH3003
POWER MANAGEMENT
Electrical Characteristics (continued)
Programmable Reset
Parameter
VDD switching threshold after power-up
VDD switching threshold for min code V_BO(MIN)
VDD switching threshold for max code
VDD threshold resolution
VDD hysteresis
Falling VDD threshold switch delay
Threshold DAC settling time
Minimum VDD for valid NRST and RST
Symbol
Min
Typ
Max
Units
V_BO(PUP)
2.3
V
V_BO(MIN)
2.27
2.3
2.33
V
V_BO(MAX)
4.2
4.3
4.4
V
V_RES
33
mV
V_HYS
50
mV
Td
2.5
μs
TDAC
4
ms
V_DD(MIN)
1
V
High-Frequency Oscillator (HFO)
Parameter
Symbol
Min
Minimum operating freq. (start-up default = 16MHz)
Maximum operating frequency
Frequency resolution
Programmed frequency accuracy at 25°C
Frequency drift over temperature and supply
CLKOUT cycle-to-cycle jitter (spread spectrum off)
F_MIN
F_MAX
F_RES
F_ST
F_DRIFT
J
16.8
-0.3
Start-up time from standby
Settling time to 0.1% after HF digitally-controlled
oscillator (DCO) code change
CLKOUT duty cycle
T_START
T_SETT
DC
40
Frequency temperature stability
Short-term frequency stability
Minimum spread spectrum range*
Maximum spread spectrum range*
CLKOUT rise/fall time (20pF load)
CLKOUT logic output low (4mA load)
CLKOUT logic output high (4mA load)
F_TS
F_S
SS(_MIN)
SS(_MAX)
T_RF
V_OL
V_OH
-0.4
*Note: After power-up, spectrum spreading of the high-frequency oscillator is disabled.
©2006 Semtech Corp.
5
Typ
5.6
21
2
±0.5
0.1
10
100
0.5
32
256
3
0.25
-0.25
Max
8
+0.3
2
60
0.4
Units
MHz
MHz
kHz
%
%
%
μs
μs
%
ppm/°C
%/sec
kHz
kHz
ns
V
Ref VDD
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