DS89C430/DS89C450 Ultra-High-Speed Flash Microcontrollers
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POWER-CYCLE TIMING CHARACTERISTICS
(VCC = 4.5V to 5.5V, TO = -40°C to +85°C.)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
Crystal Startup Time (Note 18)
tCSU
8
ms
Power-On Reset Delay (Note 19)
tPOR
65,536
tCLCL
Note 18: Startup time for a crystal varies with load capacitance and manufacturer. The time shown is for an 11.0592MHz crystal manufactured
by Fox Electronics.
Note 19: Reset delay is a synchronous counter of crystal oscillations after crystal startup. Counting begins when the level on the XTAL1 pin
meets the VIH2 criteria. At 33MHz, this time is 1.99ms.
FLASH MEMORY PROGRAMMING CHARACTERISTICS
(VCC = 4.5V to 5.5V)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
Data Retention
tDR
100
years
Write/Erase Endurance
tENDURE
10,000
cycles
Program/Time
tPROG
40
s
Erase Time
tERASE
4
ms