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參數(shù)資料
| 型號： | MAX7314AEG+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 8/25頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC I/O EXPANDER I2C 16B 24QSOP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 接口： | I²C |
| 輸入/輸出數(shù)： | 18 |
| 中斷輸出： | 是 |
| 頻率 - 時鐘： | 400kHz |
| 電源電壓： | 2 V ~ 3.6 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-SSOP（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 24-QSOP |
| 包裝： | 帶卷 (TR) |
MAX7314
Each output’s individual 4-bit intensity control only
operates during the number of timeslots gated by the
master intensity. The individual controls provide 16
intensity settings from 1/16 through 16/16 (Table 14).
Figures 16, 17, and 18 show examples of individual
intensity control settings. The highest value an individ-
ual or global setting can be set to is 16/16. This setting
forces the output to ignore the master control, and fol-
low the logic level set by the appropriate blink phase
register bit. The output becomes a glitch-free static out-
put with no PWM.
Using PWM Intensity Controls with Blink Disabled
When blink is disabled (Table 7), the blink phase 0 reg-
isters specify each output’s logic level during the PWM
on-time (Table 8). The effect of setting an output’s blink
phase 0 register bit to zero or 1 is shown in Table 11.
With its output bit set to zero, an LED can be controlled
with 16 intensity settings from 1/16th duty through fully
on, but cannot be turned fully off using the PWM inten-
sity control. With its output bit set to 1, an LED can be
controlled with 16 intensity settings from fully off
through 15/16th duty.
Using PWM Intensity Controls with Blink Enabled
When blink is enabled (Table 7), the blink phase 0 regis-
ters and blink phase 1 registers specify each output’s
logic level during the PWM on-time during the respective
blink phases (Tables 8 and 9). The effect of setting an
output’s blink phase x register bit to zero or 1 is shown in
Table 12. LEDs can be flipped between either directly on
and off, or between a variety of high/low PWM intensities.
Global/O16 Intensity Control
The 4 bits used for output O16’s PWM individual inten-
sity setting also double as the global intensity control
(Table 13). Global intensity simplifies the PWM settings
when the application requires them all to be the same,
such as for backlight applications, by replacing the 17
individual settings with 1 setting. Global intensity is
enabled with the global intensity flag G in the configura-
tion register (Table 4). When global PWM control is
used, the 4 bits of master intensity and 4 bits of global
intensity effectively combine to provide an 8-bit, 240-
step intensity control applying to all outputs.
It is not possible to apply global PWM control to a sub-
set of the ports, and use the others as logic outputs. To
mix static logic outputs and PWM outputs, individual
PWM control must be selected (Table 10).
18-Port GPIO with LED Intensity Control,
Interrupt, and Hot-Insertion Protection
16
______________________________________________________________________________________
Table 8. Blink Phase 0 Registers
REGISTER DATA
REGISTER
R/
W
ADDRESS
CODE
(hex)
D7
D6
D5
D4
D3
D2
D1
D0
Write outputs P7–P0 phase 0
0
Read back outputs P7–P0 phase 0
1
0x02
OP7
OP6
OP5
OP4
OP3
OP2
OP1
OP0
Write outputs P15–P8 phase 0
0
Read back outputs P15–P8 phase 0
1
0x03
OP15
OP14
OP13
OP12
OP11
OP10
OP9
OP8
Table 9. Blink Phase 1 Registers
REGISTER DATA
REGISTER
R/
W
ADDRESS
CODE
(hex)
D7
D6
D5
D4
D3
D2
D1
D0
Write outputs P7–P0 phase 1
0
Read back outputs P7–P0 phase 1
1
0x0A
OP7
OP6
OP5
OP4
OP3
OP2
OP1
OP0
Write outputs P15–P8 phase 1
0
Read back outputs P15–P8 phase 1
1
0x0B
OP15
OP14
OP13
OP12
OP11
OP10
OP9
OP8
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| MAX7314ATG | 功能描述:外圍驅(qū)動器與原件 - PCI RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| MAX7314ATG+ | 功能描述:外圍驅(qū)動器與原件 - PCI 18-Port GPIO RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| MAX7314ATG+T | 功能描述:接口-I/O擴(kuò)展器 18-Port GPIO RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel |
| MAX7314ATG-T | 功能描述:外圍驅(qū)動器與原件 - PCI RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| MAX7314EVKIT+ | 功能描述:外圍驅(qū)動器與原件 - PCI Evaluation Kit for the MAX7314 RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
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