UPD161401WSLASHP datasheet(90/126 Pages) RENESAS

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Data Sheet S15726EJ2V0DS

µµµµPD161401

6.37 Power System Control Register 2 (R53)

This command sets the power system mode of the

µPD161401.

/RD

R,/W

/WR

Setting

VRR3

VRR2

VRR1

VRR0

SVR3

SVR2

SVR1

SVR0

VRR3 to VRR0

When the main duty display mode is used, the resistance ratio can be changed in 16 steps by the VLCD internal

resistance ratio adjustment command. Four bits of the VLCD internal resistance ratio adjustment register set the

reference value of (1 + Rb/Ra) to the value shown in Table 6

−−−−22.

SVR3 to SVR0

When the sub-duty display mode is used, the resistance ratio can be changed in 16 steps by the VLCD internal

resistance ratio adjustment command. Four bits of the VLCD internal resistance ratio adjustment register set the

reference value of (1 + Rb/Ra) to the value shown in Table 6

−−−−22.

Table 6-22. VLCD Internal Resistance Ratio Adjustment Register

VRR3

VRR2

VRR1

VRR0

SVR3

SVR2

SVR1

SVR0

1 + Rb/Ra

0000

0001

0010

0011

0100

0101

0110

0111

1000

1001

1010

1011

1100

1101

1110

1111

Default value (default value of reset command)

00000000

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