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PDF TB62709NG Data sheet ( Hoja de datos )
| Número de pieza | TB62709NG | |
| Descripción | 7-SEGMENT DRIVERS | |
| Fabricantes | Toshiba Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TB62709NG (archivo pdf) en la parte inferior de esta página. Total 26 Páginas | ||
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TB62709NG/FG
TOSHIBA Bi−CMOS INTEGRATED CIRCUIT SILICON MONOLITHIC
TB62709NG,TB62709FG
7−SEGMENT DRIVERS WITH BUILT−IN DECODERS
(COMMON ANODE CAPABILITY, MAXIMUM 4−DIGIT CONTROL)
The TB62709NG and TB62709FG are multifunctional, compact,
7−segment LED display drivers.
These ICs can directly drive 7−segment displays and individual
LEDs, and can control either a 4−digit display with decimal
points, or 32 individual LEDs.
These ICs can also be used with common−anode displays. Their
outputs are constant current, the ampere levels at which are set
using an external resistor.
A synchronous serial port connects the IC to the CPU.
The different modes of control provided by this device including
Duty Control Register Set, Digit Set, Decode Set and Standby Set,
are all based on every 16−bit of serial data.
This devices are a product for the Pb free(Sn-Ag).
TB62709NG
TB62709FG
FEATURES
Control circuit power supply voltage
: VDD = 4.5 to 5.5 V
Digit output rating
: 17 V / −400 mA
Decoder output rating
: 17 V / 50 mA
Built−in decoder
Weight
SDIP24-P-300-1.78 : 1.62 g (typ.)
SSOP24-P-300-1.00 : 0.32 g (typ.)
: Decodes the numerals 0 to 9, certain alphabetic
characters, and of course blanks code.
Digit control function
: Can scan digit outputs DIG−0 to DIG−3 when connected
to the common anode pins of a 7−segment display.
Maximum transmission frequency
: fCLK = 15 MHz
Decoder outputs (OUT−A to OUT−Dp)
Output current can be set up to a 40mA maximum using an external resistor.
Constant current tolerance (Ta = 25°C, VDD = 5.0 V)
: Variation between bits = ±7%, variation between devices
(including variation between bits) = ±15% at VCE ≥ 0.7 V
Package
: 24−pin SDIP (SDIP24−P−300−1.78)
24−pin SSOP (SSOP24−P−300−1.00)
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3 Northway Lane North
Latham, New York 12110
Toll Free: 800.984.5337
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1 page  
TB62709NG/FG
DESCRIPTION OF OPERATION
Data input (SERIAL−IN, CLOCK, LOAD)
The data are input serially using the SERIAL−IN pin. The data input interface consists of a total of three
inputs : SERIAL−IN, LOAD, and CLOCK.
Binary code stored in the 16−bit shift register offers control modes including duty Control Register Set, Digitset,
Decode Set, and Standby Set,
The data are shifted on the rising edge of the clock, starting from the MSB. Cascade−connecting TB62709NG or
TB62709FG devices provides capability for controlling a larger number of digits.
The serial data in the 16−bit shift register are used as follows : the four bits D15 (MSB) to D12 select the IC
operating mode (Table 1), while D11 to D8 select the register corresponding to the operating mode (Table 2).
Bits D7 to D0 (LSB) of the 16−bit shift register are used for detail settings, such as number of digits in use,
character settings in each digit, and light intensity.
The internal registers are loaded on the rising edge of the LOAD signal, which causes loading of data from an
external source into the D15 (MSB) to D8 bits of the shift register, operating mode and the corresponding
register selection data. On the subsequent falling edge, the detail setting data of D7 to D0 (LSB) are loaded.
Normally LOAD is Low. After a serial transfer of 16bits, the input of a High−level pulse loads the data.
Note the following caution : Use the D15 to D8 setting and the D7 to D0 detail data setting as a pair. If only the
D7 to D0 data are input without setting D15 to D8 an error condition may result, in which the device will not
operate normally. If the current mode is set again by a new signal, the data for D15 to D8 must also be re−input.
Operating precautions
At power−on or after operation in Clear mode (in initial state), set the IC to Normal mode again. Otherwise, the
IC will not drive the LED.
Operating the IC in Blank mode (all lights off) or in All On mode (all lights lit) does not affect the internal data.
Setting the IC to Normal mode again continues the LED lighting in the state governed by the settings made
immediately before mode change.
Normal mode (not Shut Down, Clear, Blank, or All On mode) continues the operations set in Load Register
mode. In Normal mode, operations are governed by any new settings made in the Load Register, as soon as the
changed setting values are loaded.
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5 2005-10-06
5 Page 
TB62709NG/FG
LIST OF CHARACTER GENERATOR DECODING DATA
Character generator decoding (Table 8)
As the following table shows, the characters are decoded using combinations of the data in D0 to D3 and D5 to
D4. In decoding, D6 is used exclusively for setting decimal points.
Spaces where (D0, D1, D2, D3) = (0000) and (D5, D4) = (01) are regarded as blank.
Table 8 List of character generator decoding data
D0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
D1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1
D2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1
D3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1
D5 D4 HEX 0 1 2 3 4 5 6 7 8 9 A B C D E F
000
011
D7 D6
X0
X1
Dp OFF
Dp ON
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11 2005-10-06
11 Page | ||
| Páginas | Total 26 Páginas | |
| PDF Descargar | [ Datasheet TB62709NG.PDF ] | |
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