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MAX7370 Datasheet(PDF) 9 Page - Maxim Integrated Products |
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MAX7370 Datasheet(HTML) 9 Page - Maxim Integrated Products |
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9 / 37 page  ����������������������������������������������������������������� Maxim Integrated Products 9 MAX7370 8 x 8 Key-Switch Controller and LED Driver/GPIOs with I2C Interface and High Level of ESD Protection Table 1. Register Address Map and Power-Up Conditions (continued) ADDRESS CODE (hex) READ/WRITE POWER-UP VALUE (hex) REGISTER FUNCTION DESCRIPTION 0x38 R/W 0x00 GPIO supply voltage 1 GPIO voltages supplied by VCC or VLA for ROW7–ROW0 0x39 R/W 0x00 GPIO supply voltage 2 GPIO voltages supplied by VCC or VLA for COL7–COL0 0x3A R/W 0xFF GPIO values 1 Debounced input or output values of ROW7–ROW0 0x3B R/W 0xFF GPIO values 2 Debounced input or output values of COL7–COL0 0x3C R/W 0x00 GPIO level- shifter enable GPIO direct level-shifter pair enable 0x40 R/W 0x00 GPIO global configuration GPIO global enable, GPIO reset, LED fade enable 0x42 R/W 0x00 GPIO debounce ROW7–ROW0 debounce time setting 0x43 R/W 0xC0 LED constant- current setting COL7–COL4 constant-current output setting 0x45 R/W 0x00 Common PWM Common PWM duty-cycle setting 0x48 Read only 0x00 I2C timeout flag I2C timeout since last POR 0x50 R/W 0x00 COL4 PWM ratio COL4 individual duty-cycle setting 0x51 R/W 0x00 COL5 PWM ratio COL5 individual duty-cycle setting 0x52 R/W 0x00 COL6 PWM ratio COL6 individual duty-cycle setting 0x53 R/W 0x00 COL7 PWM ratio COL7 individual duty-cycle setting 0x54 R/W 0x00 COL4 LED configuration COL4 interrupt, PWM mode control, and blink- period settings 0x55 R/W 0x00 COL5 LED configuration COL5 interrupt, PWM mode control, and blink- period settings 0x56 R/W 0x00 COL6 LED configuration COL6 interrupt, PWM mode control, and blink- period settings 0x57 R/W 0x00 COL7 LED configuration COL7 interrupt, PWM mode control, and blink- period settings 0x58 R/W 0xFF Interrupt mask 1 Interrupt mask for ROW7–ROW0 0x59 R/W 0xFF Interrupt mask 2 Interrupt mask for COL7–COL0 0x5A R/W 0x00 GPI trigger mode 1 GPI edge-triggered detection setting for ROW7–ROW0 0x5B R/W 0x00 GPI trigger mode 2 GPI edge-triggered detection setting for COL7–COL0 |
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