C8051F352 Datasheet, PDF (67/234 Pages) Silicon Laboratories – 8 k ISP Flash MCU Family

C8051F350/1/2/3
6. 8-Bit Current Mode DACS (IDA0 and IDA1)
The C8051F350/1/2/3 devices include two 8-bit current-mode Digital-to-Analog Converters (IDACs). The
maximum current output of the IDACs can be adjusted for four different current settings; 0.25 mA, 0.5 mA,
1 mA, and 2 mA. The IDACs can be individually enabled or disabled using the enable bits in the corre-
sponding IDAC Control Register (IDA0CN or IDA1CN). An internal bandgap bias generator is used to gen-
erate a reference current for the IDACs whenever they are enabled. IDAC updates can be performed on-
demand, scheduled on a Timer overflow, or synchronized with an external pin edge. Figure 6.1 shows a
block diagram of the IDAC circuitry.
IDAnEN
IDAnCM2
IDAnCM1
IDAnCM0
IDAnCSC
IDAnOMD1
IDAnOMD0
8
8
IDAn
IDAn
Output
Figure 6.1. IDAC Functional Block Diagram
Rev. 1.1
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