Z8F4822AR020SG Datasheet, PDF (231/323 Pages) Zilog, Inc. – High Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F64xx Series
Product Specification
211
On-Chip Peripheral AC and DC Electrical Characteristics
Table 108. Power-On Reset and Voltage Brown-Out Electrical Characteristics and Timing
T_A = –40°C to 125°C
Symbol Parameter
Minimum Typical* Maximum Units Conditions
V_POR
Power-On Reset
Voltage Threshold
2.40
2.70
2.90
V V_DD = V_POR
V_VBO
Voltage Brown-Out
Reset Voltage
Threshold
2.30
2.60
2.85
V V_DD = V_VBO
V_POR to V_VBO
hysteresis
50
100
–
mV
Starting V_DD voltage to
–
V_SS
–
V
ensure valid Power-On
Reset.
T_ANA
Power-On Reset
Analog Delay
–
50
–
µs V_DD > V_POR; T_POR Digital
Reset delay follows T_ANA
T_POR
Power-On Reset Digital
–
6.6
–
ms 66 WDT Oscillator cycles
Delay
(10 kHz) + 16 System
Clock cycles (20 MHz)
T_VBO
Voltage Brown-Out
–
10
–
µs V_DD < V_VBO to generate a
Pulse Rejection Period
Reset.
T_RAMP Time for V_DD to
0.10
–
100
ms
transition from V_SS to
V_POR to ensure valid
Reset
Note: *Data in the typical column is from characterization at 3.3V and 0°C. These values are provided for design guid-
ance only and are not tested in production.
PS019924-0113
P R E L I M I N A R Y On-Chip Peripheral AC and DC Electrical