Z8 Encore!
®
64K Series
Product Specification
219
On-Chip Peripheral AC and DC Electrical Characteristics
Table 106. Power-On Reset and Voltage Brown-Out Electrical Characteristics and Timing
T
A
= –40
0
C to 125
0
C
Symbol Parameter
V
POR
V
VBO
Power-On Reset Voltage
Threshold
Voltage Brown-Out Reset
Voltage Threshold
V
POR
to V
VBO
hysteresis
Starting V
DD
voltage to
ensure valid Power-On
Reset.
T
ANA
T
POR
Power-On Reset Analog
Delay
Power-On Reset Digital
Delay
Voltage Brown-Out Pulse
Rejection Period
Minimum Typical
1
Maximum
2.40
2.30
50
–
2.70
2.60
100
V
SS
2.90
2.85
–
–
Units
V
V
mV
V
Conditions
V
DD
= V
POR
V
DD
= V
VBO
–
–
50
6.6
–
–
μs
ms
V
DD
> V
POR
; T
POR
Digital
Reset delay follows T
ANA
66 WDT Oscillator cycles
(10KHz) + 16 System Clock
cycles (20MHz)
V
DD
< V
VBO
to generate a
Reset.
T
VBO
–
0.10
10
–
–
100
μs
ms
T
RAMP
Time for VDD to transition
from V
SS
to V
POR
to ensure
valid Reset
1 Data in the typical column is from characterization at 3.3V and 0
0
C. These values are provided for design guidance
only and are not tested in production.
PS019915-1005
Electrical Characteristics
ZILOG [ ZILOG, INC. ]
