HCS370 Datasheet, PDF (26/36 Pages) Microchip Technology – KEELOQ Code Hopping Encoder

HCS370
TABLE 9-2: AC CHARACTERISTICS
Commercial (C): TAMB = 0°C to +70°C
Industrial (I):
TAMB = -40°C to +85°C
Parameter
Sym.
2.05V < VDD < 5.5
Min. Typ.⁽¹⁾ Max.
Unit Conditions
Timing Element
Power-up Time
TE
90
—
880
µs BSEL = 00₂ (min) or
BSEL = 01₂
BSEL = 10₂
BSEL = 11₂ (max)
TPU
—
25
—
ms
PLL Set-up Time
TPLL
10
15
30
ms WAIT = 0
—
—
285
ms WAIT = 1
LED On Time
TLEDON
45
—
110
ms LEDOS = 0 (min) or
LEDOS = 1 (max)
LED Off Time
TLEDOFF
450
500
550
ms
Guard Time
TG
1.8
2TE
112.6
ms GSEL = 00₂(min)
5.6
6.4
7.0
ms GSEL = 01₂
46.1
51.2
56.3
ms GSEL = 10₂
96.1 102.4 42.6
ms GSEL = 11₂(max)
Note 1: All timing values are subject to the oscillator variance. These parameters are characterized but not tested.
DS41111D-page 26
Preliminary
2002 Microchip Technology Inc.