ST7569 View Datasheet(PDF) - Sitronix Technology Co., Ltd.
Part Name
Description
MFG CO.
'ST7569' PDF : 73 Pages View PDF
ST7565S
• The Relationship Between Oscillator Frequency fOSC, Display Clock Frequency fCL and the Liquid Crystal Frame
Rate Frequency fFR
Table 23
Item
fCL
fFR
1/65 DUTY
Used internal oscillator circuit
Used external display clock
fOSC / 4
External input (fCL)
1/49 DUTY
Used internal oscillator circuit
Used external display clock
fOSC / 4
External input (fCL)
1/33 DUTY
Used internal oscillator circuit
Used external display clock
fOSC / 8
External input (fCL)
1/55 DUTY
Used internal oscillator circuit
Used external display clock
fOSC / 4
External input (fCL)
1/53 DUTY
Used internal oscillator circuit
Used external display clock
fOSC / 4
External input (fCL)
(fFR is the liquid crystal alternating current period, and not the FR signal period.)
fOSC / (4*65)
fCL / 260
fOSC / (4*49)
fCL / 196
fOSC / (8*33)
fCL / 264
fOSC / (4*55)
fCL / 220
fOSC / (4*53)
fCL / 212
References for items market with *
*1 While a broad range of operating voltages is guaranteed, performance cannot be guaranteed if there are sudden
fluctuations to the voltage while the MPU is being accessed.
*2 The operating voltage range for the VDD system and the V5 system is. This applies when the external power supply is
being used.
*3 The A0, D0 to D5, D6 (SCL), D7 (SI), /RD (E), /WR (R/W), /CS1, CS2, CLS, CL, FR, M/S, C86, P/S, /DOF, /RES, IRS, and
/HPM terminals.
*4 The D0 to D7, FR, FRS, /DOF, and CL terminals.
*5 The A0, /RD (E), /WR (R/W), /CS1, CS2, CLS, M/S, C86, P/S, /RES, IRS, and /HPM terminals.
*6 Applies when the D0 to D5, D6 (SCL), D7 (SI), CL, FR, and /DOF terminals are in a high impedance state.
*7 These are the resistance values for when a 0.1 V voltage is applied between the output terminal SEGn or COMn and the
various power supply terminals (V1, V2, V3, and V4). These are specified for the operating voltage (3) range.
RON = 0.1 V /ΔI (Where ΔI is the current that flows when 0.1 V is applied while the power supply is ON.)
*8 See Table 23 for the relationship between the oscillator frequency and the frame rate frequency.
*9 The V5 voltage regulator circuit regulates within the operating voltage range of the voltage follower.
*10 This is the internal voltage reference supply for the V5 voltage regulator circuit. In the ST7565S , the temperature range
approximately –0.05%/°C.
*11, 12 It indicates the current consumed on ICs alone when the internal oscillator circuit and display are turned on.
The ST7565S is 1/9 biased. Does not include the current due to the LCD panel capacity and wiring capacity.
Applicable only when there is no access from the MPU.
*12 It is the value on a ST7565S having the VREG temperature gradient is –0.05%/°C when the V5 voltage regulator
internal resistor is used.
Ver 0.3c
62/73
2002/07/22
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