ST7567 View Datasheet(PDF) - Unspecified
Part Name
Description
MFG CO.
'ST7567' PDF : 73 Pages View PDF
ST7565S
VREG is the IC-internal fixed voltage supply, and its voltage at Ta = 25°C is as shown in Table 9.
Part no.
ST7565S
Table 9
Equipment Type
Internal Power Supply
Thermal Gradient
–0.05 %/°C
VREG
–2.1V
α is set to 1 level of 64 possible levels by the electronic volume function depending on the data set in the 6-bit electronic
volume registers. Table 10 shows the value for α depending on the electronic volume register settings.
Rb/Ra is the V5 voltage regulator internal resistor ratio, and can be set to 8 different levels through the V5 voltage regulator
internal resistor ratio set command. The (1 + Rb/Ra) ratio assumes the values shown in Table 11 depending on the 3-bit data
settings in the V5 voltage regulator internal resistor ratio register.
Table 10
D5 D4 D3 D2 D1 D0 α
0 0 0 0 0 0 63
0 0 0 0 0 1 62
0 0 0 0 1 0 61
:
:
:
:
1 11 10 1 2
1 11 11 0 1
1 11 11 1 0
V5 voltage regulator internal resistance ratio register value and (1 + Rb/Ra) ratio (Reference value)
Table 11
Register
ST7565S
D2 D1 D0
00 0
00 1
01 0
01 1
10 0
10 1
11 0
11 1
(1) –0.05 %/°C
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
Figures 9, 10 show V5 voltage measured by values of the internal resistance ratio resistor for V5 voltage adjustment and electric
volume resister for each temperature grade model.
Ver 0.3c
34/73
2002/07/22
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