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ST7637 Datasheet(PDF) 53 Page - Sitronix Technology Co., Ltd. |
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ST7637 Datasheet(HTML) 53 Page - Sitronix Technology Co., Ltd. |
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53 / 210 page  ST7637 Ver 1.6 53/210 2009/03 7.10.1.2. SET V0 with temperature compansation (Temperatue ≠ 24 ) ℃ ℃ ℃ ℃ There are 16-line slope in each temperature steps and customer can select one line slope of temperature compensation coefficiency for each temperature step. Each temperature step is 8 oC. Please see Figure 7.10-4 as below. Figure 7.10-4 In command TEMPSEL (see section 9.1.72) each MTx, where x=0, 1, 2,…, E, F, has a value between 0 and 15. MTx = 0 results in 0V increment on V0, MTx = 1 results in Mx=5mV increment, …, MTx = 15 results in Mx=15x5mV=75mV increment. Note that each MTx individually corresponds to a temperature interval; The relations between Mx and V0 quantity due to temperature V0(T) are described in the equations shown as follows: Temperature range Equation V0(V) at temperature= T℃ ℃ ℃ ℃ -40 T ℃ ℃ ＜ -32℃ V0(T) = V0(T24)+ (-32-T)．M0 +( M1 + M2 + M3 + M4 + M5 + M6 + M7)．8 -32 T ℃ ℃ ＜ -24℃ V0(T) = V0(T24)+ (-24-T)．M1 +( M2 + M3 + M4 + M5 + M6 + M7)．8 -24 T ℃ ℃ ＜ -16℃ V0(T) = V0(T24)+ (-16-T)．M2 +( M3 + M4 + M5 + M6 + M7)．8 -16 T ℃ ℃ ＜ -8℃ V0(T) = V0(T24)+ (-8-T)．M3 +( M4 + M5 + M6 + M7)．8 -8 T ℃ ℃ ＜ 0℃ V0(T) = V0(T24)+ (0-T)．M4 +( M5 + M6 + M7)．8 0 T ℃ ℃ ＜ 8℃ V0(T) = V0(T24)+ (8-T)．M5 +( M6 + M7)．8 8 T ℃ ℃ ＜ 16℃ V0(T) = V0(T24)+ (16-T)．M6 + M7．8 16 T ℃ ℃ ＜ 24℃ V0(T) = V0(T24)+ (24-T)．M7 24 T ℃ ℃ ＜ 32℃ V0(T) = V0(T24)－(T-24)．M8 32 T ℃ ℃ ＜ 40℃ V0(T) = V0(T24)－(T-32)．M9－M8．8 40 T ℃ ℃ ＜ 48℃ V0(T) = V0(T24)－(T-40)．M10－(M9 + M8 )．8 48 T ℃ ℃ ＜ 56℃ V0(T) = V0(T24)－(T-48)．M11－(M10 + M9 + M8 )．8 56 T ℃ ℃ ＜ 64℃ V0(T) = V0(T24)－(T-56)．M12－(M11 + M10 + M9 + M8 )．8 64 T ℃ ℃ ＜ 72℃ V0(T) = V0(T24)－(T-64)．M13－(M12 + M11 + M10 + M9 + M8 )．8 72 T ℃ ℃ ＜ 80℃ V0(T) = V0(T24)－(T-72)．M14－(M13 + M12 + M11 + M10 + M9 + M8 )．8 80 T ℃ ℃ ＜ 88℃ V0(T) = V0(T24)－(T-80)．M15－( M14 + M13 + M12 + M11 + M10 + M9 + M8 )．8 |
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