Specifications

S1C6P466 TECHNICAL MANUAL EPSON 103
CHAPTER 6: DIFFERENCES FROM MASK ROM MODELS
6.6 SVD Circuit
The S1C6P466 has a built-in SVD (Supply Voltage Detection) circuit with the same configuration as that of
the mask ROM model (S1C634xx). However, the mask option is fixed at "with external voltage detection".
Table 6.6.1 lists the criteria voltages.
Table 6.6.1 SVD criteria voltage list
SVDS3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
SVDS0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
SVDS1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
SVDS2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
S1C6P466
1.05
(external voltage)
–
–
–
–
–
–
–
–
–
2.80
2.90
3.00
3.10
3.20
3.30
Criteria voltage (V)
S1C634xx
1.85 / 1.05
1.90
2.00
2.10
2.20
2.30
2.40
2.50
2.60
2.70
2.80
2.90
3.00
3.10
3.20
3.30
A criteria voltage can be set using the SVDS0–SVDS3 register (FF04H).
Since the minimum operating voltage of the S1C6P466 is 2.7 V, 2.7 V or less criteria voltages are not
available. Be aware that the SVD circuit in the S1C6P466 may not operate when a 2.7 V or less criteria
voltage is selected.
For the software control sequence of the SVD circuit, refer to the "S1C634xx Technical Manual".