Download Epson S5U1C63000H2 Specifications

CHAPTER 7: SUMMARY OF NOTES
SVD circuit
(1) To obtain a stable detection result, the SVD circuit must be ON for at least l00 µsec. So, to obtain the
SVD detection result, follow the programming sequence below.
1.
2.
3.
4.
Set SVDON to "1"
Maintain for 100 µsec minimum
Set SVDON to "0"
Read SVDDT
(2) The SVD circuit should normally be turned OFF because SVD operation increase current consumption.
Interrupt
(1) The interrupt factor flags are set when the interrupt condition is established, even if the interrupt
mask registers are set to "0".
(2) After an interrupt occurs, the same interrupt will occur again if the interrupt enabled state (I flag =
"1") is set or the RETI instruction is executed unless the interrupt factor flag is reset. Therefore, be sure
to reset (write "1" to) the interrupt factor flag in the interrupt service routine before shifting to the
interrupt enabled state.
(3) After an initial reset, all the interrupts including NMI are masked until both the stack pointers SP1
and SP2 are set with the software. Be sure to set the SP1 and SP2 in the initialize routine.
Further, when re-setting the stack pointer, the SP1 and SP2 must be set as a pair. When one of them is
set, all the interrupts including NMI are masked and interrupts cannot be accepted until the other one
is set.
Flash EEPROM
(1) Inspection data is written to the PROM at shipment. Therefore, it must be programmed before
operating the IC in the normal operation mode (refer to Appendix A).
(2) The Flash EEPROM data can be rewritten up to 100 times for both the code and data PROMs. Rewriting data is done at the user's own risk.
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EPSON
S1C6P466 TECHNICAL MANUAL