Z8F082ASJ020EG Datasheet, PDF (250/282 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F082A Series
Product Specification
233
On-Chip Peripheral AC and DC Electrical Characteristics
Table 135 tabulates the electrical characteristics of the POR and VBO blocks.
Table 135. Power-On Reset and Voltage Brown-Out Electrical Characteristics and Timing
Symbol Parameter
T_A = –40°C to +105°C
Minimum Typical¹ Maximum Units Conditions
V_POR Power-On Reset Voltage Thresh-
2.20
old
2.45
2.70
V V_DD = V_POR
V_VBO Voltage Brown-Out Reset Voltage 2.15
Threshold
2.40
2.65
V V_DD = V_VBO
V_POR to V_VBO hysteresis
50
75
mV
Starting V_DD voltage to ensure
–
V_SS
–
V
valid Power-On Reset.
T_ANA Power-On Reset Analog Delay
–
70
–
µs V_DD > V_POR;
T_POR Digital
Reset delay
follows T_ANA
T_POR Power-On Reset Digital Delay
16
µs 66 Internal
Precision
Oscillator
cycles + IPO
startup time
(T_IPOST)
T_POR Power-On Reset Digital Delay
1
ms 5000 Internal
Precision
Oscillator
cycles
T_SMR Stop Mode Recovery with crystal
16
oscillator disabled
µs 66 Internal
Precision
Oscillator
cycles
T_SMR Stop Mode Recovery with crystal
1
oscillator enabled
ms 5000 Internal
Precision
Oscillator
cycles
T_VBO Voltage Brown-Out Pulse Rejec-
–
10
–
µs Period of time
tion Period
in which V_DD <
V_VBO without
generating a
Reset.
Note: Data in the typical column is from characterization at 3.3V and 30°C. These values are provided for design guid-
ance only and are not tested in production.
PS022827-1212
P R E L I M I N A R Y On-Chip Peripheral AC and DC Electrical