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MAX6959BAEE+ Datasheet

  • MAX6959BAEE+

  • IC DRVR DSPL LED 16-QSOP

  • 679.40KB

  • 19頁(yè)

  • Maxim   Maxim

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2-Wire Interfaced, 3V to 5.5V, 4-Digit,
9-Segment LED Display Drivers with Keyscan
Table 3. Command Address
Autoincrement Behavior
COMMAND BYTE
ADDRESS RANGE
00000000 to
01111110
01111111
AUTOINCREMENT BEHAVIOR
Command byte address autoincrements
after byte read or written
Command byte address remains at
01111111 after byte written or read
Command Address Autoincrementing
Address autoincrementing allows the MAX6958/
MAX6959 to be configured with the shortest number of
transmissions by minimizing the number of times the
command byte needs to be sent. The address pointer
stored in the MAX6958/MAX6959 increments after each
data byte is written or read, unless the address equals
01111111 (Table 3).
MAX6958/MAX6959
Digit Type Registers
The MAX6958/MAX6959 store display data in five regis-
ters. The four digit registers each control the seven
numeric segments of a seven-segment digit, but not
the DP segments. The segments register controls eight
individual LEDs, which can be any mix of discrete LEDs
and any or all of the DP segments of the four 7-seg-
ment digits (Table 5) (Figure 10).
a
f
g
e
d
c
dp
b
Operation with Multiple Masters
If the MAX6958/MAX6959 are operated on a 2-wire
interface with multiple masters, a master reading the
MAX6958/MAX6959 should use a repeated start
between the write, which sets the MAX6958/MAX6959s鈥?/div>
address pointer, and the read(s) that takes the data
from the location(s) set by the address pointer. It is
possible for master 2 to take over the bus after master
1 has set up the MAX6958/MAX6959s鈥?address pointer
but before master 1 has read the data. If master 2 sub-
sequently changes the MAX6958/MAX6959s鈥?address
pointer, then master 1's delayed read may be from an
unexpected location.
Figure 10. Segment Labeling for 7-Segment Display
Table 4. Register Address Map
REGISTER
No-op
Decode mode
Intensity
Scan limit
Configuration
Factory reserved. Do not write to this register.
GPIO (MAX6959 only)
Display test
Read key debounced (MAX6959 only)
A write to this register is ignored.
Read key pressed (MAX6959 only)
A write to this register is ignored.
Digit 0
Digit 1
Digit 2
Digit 3
Segments
COMMAND ADDRESS
D15
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
D14
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
D13
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
D12
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
D11
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
D10
0
0
0
0
1
1
1
1
0
1
0
0
0
0
1
D9
0
0
1
1
0
0
1
1
0
0
0
0
1
1
0
D8
0
1
0
1
0
1
0
1
0
0
0
1
0
1
0
HEX
CODE
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x0C
0x20
0x21
0x22
0x23
0x24
_______________________________________________________________________________________
9

MAX6959BAEE+ 產(chǎn)品屬性

  • Lead (SnPb) Finish for COTSObsolescence Mitigation Program

  • 100

  • 集成電路 (IC)

  • PMIC - 顯示器驅(qū)動(dòng)器

  • -

  • LED

  • 7 段 + 2 個(gè)信號(hào)器

  • SMBus（2 線/I²C）

  • 4 位數(shù)字

  • 5.9mA

  • 3 V ~ 5.5 V

  • -40°C ~ 125°C

  • 表面貼裝

  • 16-SSOP（0.154"，3.90mm 寬）

  • 16-QSOP

  • 管件

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