z8f1621 ZiLOG Semiconductor, z8f1621 Datasheet - Page 237

• Manufacturer Part Number: z8f1621
• Description: High Performance 8-bit Microcontrollers
• Manufacturer: ZiLOG Semiconductor

PS019921-0308
Table 108. External RC Oscillator Electrical Characteristics and Timing
Table 109. Reset and Stop Mode Recovery Pin Timing
Symbol Parameter
V
R
C
F
1
2.7 V, but before the power supply drops to the voltage brown-out threshold. The oscillator will resume oscillation as
soon as the supply voltage exceeds 2.7 V.
Symbol Parameter
T
T
When using the external RC oscillator mode, the oscillator may stop oscillating if the power supply drops below
OSC
RESET
SMR
DD
EXT
EXT
Operating Voltage
Range
External Resistance from
XIN to VDD
External Capacitance
from XIN to VSS
External RC Oscillation
Frequency
RESET pin assertion to
initiate a system reset.
Stop Mode Recovery
pin Pulse Rejection
Period
T
Minimum Typical
T
Minimum Typical
A
A
2.70
= –40 °C to 125 °C
10
= –40 °C to 125 °C
4
40
0
–
1
20
–
45
20
–
–
1
Maximum
Maximum
1000
40
200
–
–
4
Units
Units
T
MHz
ns
Z8 Encore! XP
CLK
kΩ
pF
V
Conditions
Not in STOP Mode.
T
period.
RESET, DBG, and GPIO
pins configured as SMR
sources.
Conditions
V
CLK
DD
Product Specification
= System Clock
= V
Electrical Characteristics
VBO
®
F64XX Series
223