MAX6852AEE+T Maxim Integrated Products, MAX6852AEE+T Datasheet - Page 9

• Manufacturer Part Number: MAX6852AEE+T
• Description: IC VFD CTRLR MATRIX 16QSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX6852AEE+T

• Display Type: Vacuum Fluorescent (VF)
• Configuration: 5 x 7 (Matrix)
• Interface: Serial
• Current - Supply: 3.5mA
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Digits Or Characters: -

Table 8 shows how to use the single user-defined font
register 0x05 to set the font address pointer, write font
data, and read font data. A read action always returns
font data from the font address pointer position. A write
action sets the 7-bit font address pointer if the MSB is
set, or writes 7-bit font data to the font address pointer
position if the MSB is clear.
The font address pointer autoincrements after a valid
access to the user-definable font data. Autoincrementing
allows the 120-font data entries to be written and read
back very quickly because the font pointer address need
only be set once. After the last data location 0xF7 has
Table 1. Display Modes
Table 2. Register Address Map
48/1 mode
96/2 mode
No-op
VFBLANK polarity
Intensity
Grids
Configuration
User-defined fonts
Output map
Display test and device ID
PUMP register
Filament duty cycle
PHASE1
PHASE2
PORT0
PORT1
Shift limit
Cursor
Factory reserved. Do not write to register.
DISPLAY
MODE
48 digits, each with a DP segment and a cursor
segment
96 digits, each with a DP segment and a cursor
segment
_______________________________________________________________________________________
REGISTER
4-Wire Interfaced, 5
MAXIMUM NO. OF DIGITS
Fluorescent Display Controller
D15
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
R/W
R/W
X
D14
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
MAXIMUM NO. OF
ANNUNCIATORS
been written, further font data entries are ignored until the
font address pointer is reset. If the font address pointer is
set to an out-of-range address by writing data in the 0xF8
to 0xFF range, then address 0x80 is set instead (Table 9).
Table 10 shows the user-definable font pointer base
addresses.
Table 11 shows an example of data (characters 0, 1,
and 2) being stored in the first three user-defined font
locations, illustrating the orientation of the data bits.
4 per digit
D13
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
None
COMMAND ADDRESS
✕
D12
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
7 Matrix Vacuum-
D11
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
MAXIMUM NO.
OF GRIDS
48 grids
D10
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
D9
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
DIGITS COVERED
BY EACH GRID
2 digits per grid
1 digit per grid
D8
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
CODE
0x0C
0x0D
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x0A
0x0B
0x0E
0x0F
0x10
HEX
9