參數(shù)資料
型號(hào): MAX7316ATE+
廠商: Maxim Integrated Products
文件頁數(shù): 6/24頁
文件大?。?/td> 0K
描述: IC I/O EXPANDER I2C 16B 16TQFN
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 100
接口: I²C,SM 總線
輸入/輸出數(shù): 10
中斷輸出:
頻率 - 時(shí)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: 16-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 16-TQFN-EP(3x3)
包裝: 管件
MAX7316
The blink mode is disabled by clearing the blink enable
flag E in the configuration register (Table 4). When blink
mode is disabled, the state of the blink flip flag is
ignored, and the blink phase 0 register alone controls
the output ports.
The logic status of BLINK is made available as the
read-only blink status flag, blink in the configuration
register (Table 4). This flag allows BLINK to be used as
an extra general-purpose input (GPI) in applications not
using the blink function. When BLINK is going to be
used as a GPI, blink mode should be disabled by
clearing the blink enable flag E in the configuration reg-
ister (Table 4).
Blink Phase Register
When the blink function is disabled, the blink phase 0
register sets the logic levels of the eight ports (P0
through P7) when configured as outputs (Table 8). A
duplicate register called the blink phase 1 register is
also used if the blink function is enabled (Table 9). A
logic high sets the appropriate output port high imped-
ance, while a logic low makes the port go low.
Reading a blink phase register reads the value stored
in the register, not the actual port condition. The port
output itself may or may not be at a valid logic level,
depending on the external load connected.
The 9th output, O8, is controlled through 2 bits in the
configuration register, which provide the same static or
blink control as the other eight output ports.
PWM Intensity Control
The MAX7316 includes an internal oscillator, nominally
32kHz, to generate PWM timing for LED intensity con-
trol or other applications such as PWM trim DACs.
PWM can be disabled entirely for all the outputs. In this
case, all outputs are static and the MAX7316 operating
current is lowest because the internal PWM oscillator is
turned off.
10-Port I/O Expander with LED Intensity
Control, Interrupt, and Hot-Insertion Protection
14
______________________________________________________________________________________
Table 4. Configuration Register (continued)
REGISTER DATA
REGISTER
ADDRESS
CODE
(HEX)
D7
D6
D5
D4
D3
D2
D1
D0
CONFIGURATION
R/
W
INTERRUPT
STATUS
BLINK
STATUS
INTERRUPT
OUTPUT
CONTROL
AS
GPO
INTERRUPT
ENABLE
GLOBAL
INTENSITY
BLINK
FLIP
BLINK
ENABLE
Read back BLINK input pin status—
input is low
1
X
0
XXX
Read back BLINK input pin status—
input is high
1
X
1
XXX
Read back data change interrupt status
—data change is not detected, and
INT/O8 output is high when interrupt
enable (I bit) is set
1
0
XXXXXXX
Read back data change interrupt status
—data change is detected, and INT/O8
output is low when interrupt enable (I bit)
is set
1
0x0F
1
XXXXXXX
X = Don’t care.
BLINK
PHASE
REGISTERS
BLINK INPUT
BLINK FLIP FLAG B
BLINK ENABLE FLAG E
Figure 11. Blink Logic
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