EM77950
BB Controller
19.3 Voltage Detector Electrical Characteristic
Ta=25°C
Symbol
Vdet
Parameter
Detect voltage
Release voltage
Condition
Min
1.8
−
Typ
Max
2.2
−
Unit
V
−
−
2.0
Vrel
Iss
Vdet × 1.05
V
Current consumption VDD = 3V
−
−
−
0.8
3.5
μA
V
Vop
Operating voltage
−
0.7*
Vdet Temperature
characteristic
ΔVdet/ΔTa
0°C ≤ Ta ≤ 70°C
−
−
-2
MV/°C
* When the VDD voltage rises between Vop=0.7V and Vdet, the voltage detector output
must be "Low".
19.4 AC Electrical Characteristic
19.4.1 MCU
Ta=0°C ~ 70 °C, VDD=3.3 V±5%, VSS=0V
Ta=0°C ~ 70 °C, VDD=3.3 V±5%, VSS=0V
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Dclk
Input CLK duty cycle
−
45
50
55
%
Instruction cycle time
(CLKS="0")
Crystal type
RC type
125
500
DC
DC
ns
ns
Tins
−
Ttcc
TCC input period
−
(Tins+20)/N*
−
−
30
−
ns
ms
ns
°
Tdrh
Trst
Device reset hold time
/RESET pulse width
Watchdog timer period
Input pin setup time
Input pin hold time
Output pin delay time
Ta = 25 C
9
18
−
°
Ta = 25 C
2000
°
Twdt
Tset
Ta = 25 C
9
−
−
−
18
0
30
−
ms
ms
ms
ms
−
Thold
Tdelay
−
20
50
−
Cload=20pF
−
* N= selected prescaler ratio.
Product Specification (V1.0) 10.09.2007
(This specification is subject to change without further notice)
• 91
ELAN [ ELAN MICROELECTRONICS CORP ]
