ADP5589 Analog Devices, ADP5589 Datasheet - Page 41

• Manufacturer Part Number: ADP5589
• Description: Keypad Decoder and I/O Expansion
• Manufacturer: Analog Devices

Specifications of ADP5589

• Vin Range: 1.8 to 3.0V
• Number Of I/os: 19
• Application: Mobil I-0 Exp-Keybd Cont,Mobil I-O Expander
• Qwerty Keypad: Yes
• Other Functions: I2C I/O & register
• Function Flag: Mobil I-O
• Package: 24-Lead LFCSP,25-Ball WLCSP

Bits
[1:0]
PWM_OFFT_LOW Register 0x3E
Table 70. PWM_OFFT_LOW Bit Descriptions
Bits
[7: 0]
PWM_OFFT_HIGH Register 0x3F
Table 71. PWM_OFFT_HIGH Bit Descriptions
Bits
[7: 0]
PWM_ONT_LOW Register 0x40
Table 72. PWM_ONT_LOW Bit Descriptions
Bits
[7:0]
PWM_ONT_HIGH Register 0x41
Table 73. PWM_ONT_HIGH Bit Descriptions
Bits
[7:0]
PWM_CFG Register 0x42
Table 74. PWM_CFG Bit Descriptions
Bits
[7:3]
2
1
0
Name
PWM_OFFT_HIGH_BYTE[7:0]
Name
PWM_OFFT_LOW_BYTE[7:0]
Name
PWM_ONT_HIGH_BYTE[7:0]
Name
PWM_ONT_LOW_BYTE[7:0]
Name
RESET_PULSE_WIDTH[1:0]
Name
PWM_IN_AND
PWM_MODE
PWM_EN
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
Lower eight bits of PWM on time.
Description
Upper eight bits of PWM on time. Note that updated PWM times are not latched until this
byte is written to. PWM count times are referenced from the internal oscillator. The fastest
oscillator setting is 500 kHz (1 μs increments). Therefore, maximum on/off time is
This gives PWM frequencies from 500 kHz down to 7.6 Hz.
Description
Reserved.
AND the internally generated PWM signal with an externally supplied PWM signal (C6).
Defines PWM mode.
0 = continuous.
1 = one shot.
If a one-shot is performed, the PWM_EN bit is automatically cleared.
If a second one-shot must be performed, the user must set PWM_EN again.
Enable PWM generator.
1 μs × (2
Defines the pulse width of the reset signals.
Lower eight bits of PWM off time.
Description
Parameter common to both RESET1 and RESET2.
00 = 500 μs.
01 = 1 ms.
10 = 2 ms.
11 = 10 ms.
Description
Description
Upper eight bits of PWM off time.
16
−1) = 65.5 ms
Rev. A | Page 41 of 48
ADP5589