Rainbow Electronics 78M6631 - Manual (Page 21)

DS_6631_056 78M6631 Data Sheet
Rev 1 21
2.5 Timing Specifications
2.5.1 Flash Memory
Table 14: Flash Memory Timing Specifications
Parameter Condition Min Typ Max Unit
Flash write cycles -40°C to +85°C 20,000 Cycles
Flash data retention +25°C 100 Years
Flash data retention +85°C 10 Years
Flash byte write operations between
page or mass erase operations
2 Cycles
Write Time per Byte 42 µ s
Page Erase (1024 bytes) 20 ms
Mass Erase 200 ms
2.5.2 EEPROM Interface
Table 15: EEPROM Interface Timing
Parameter Condition Min Typ Max Unit
Write Clock frequency (I 2 C)
CKMPU = 4.9152 MHz,
using interrupts
78 kHz
CKMPU = 4.9152 MHz,
bit-banging DIO4/5
150 kHz
Write Clock frequency (3-wire) CKMPU = 4.9152 MHz 500 kHz
2.5.3 RESET
Table 16: RESET Timing
Parameter Condition Min Typ Max Unit
Reset pulse width 5 µ s
Reset pulse fall time 1 1 µ s
1 Guaranteed by design; not production tested.