UPD78F1154GK-GAK-AX NEC, UPD78F1154GK-GAK-AX Datasheet - Page 47

• Manufacturer Part Number: UPD78F1154GK-GAK-AX
• Description: 16BIT MCU, 128K FLASH, 8K RAM, SMD
• Manufacturer: NEC

Specifications of UPD78F1154GK-GAK-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 70
• Ram Memory Size: 8192Byte
• Cpu Speed: 20MHz
• No. Of Timers: 9
• No. Of: RoHS Compliant
• Core Size: 16bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

7.8 D/A Converter
configured so that output analog signals of two channels (ANO0 and ANO1) can be controlled. The D/A converter has
the following features.
The D/A converter has a resolution of 8 bits and converts an input digital signal into an analog signal. It is
Remark n = 0, 1
Remarks 1. INTTM04 and INTTM05 are timer trigger signals (interrupt signals from timer channels 4 and 5) that
The D/A converter consists of the following hardware units.
(1) Peripheral enable register 0 (PER0)
(2) D/A converter mode register (DAM)
(3) 8-bit D/A conversion value setting registers 0, 1 (DACS0, DACS1)
8-bit resolution × 2 chs
R-2R ladder method
Output analog voltage: AV
register)
Operation mode: Normal mode/real-time output mode
Bit 6 of this register is used to enable or stop operation of the D/A converter. The default value of this bit is set
to stop the operation of the D/A converter.
This register controls the operation of the D/A converter.
These registers are used to set an analog voltage value to be output to the ANO0 and ANO1 pins.
2. Channel 0 and Channel 1 of the D/A converter share the AV
3. Channel 0 and Channel 1 of the D/A converter share the AV
Write signal of DACS0 register
Write signal of DACS1 register
are used in the real-time output mode.
the A/D converter.
DAMD0 of DAM register
DAMD1 of DAM register
AV
INTTM04 signal
INTTM05 signal
AV
REF1
SS
REF1
pin
pin
Figure 7-7. Block Diagram of D/A Converter
× m/256 (AV
Preliminary Product Information U17892EJ2V0PM
DACE0 of DAM register
DACE1 of DAM register
REF1
: Reference voltage for D/A converter, m: Value set to DACSn
8-bit D/A conversion value
setting register 0 (DACS0)
8-bit D/A conversion value
setting register 1 (DACS1)
Selector
Selector
REF1
SS
pin. The AV
pin.
ANO0 pin
ANO1 pin
SS
pin is also shared with
78K0R/KF3
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