C8051F411-GMR Silicon Laboratories Inc, C8051F411-GMR Datasheet - Page 69
C8051F411-GMR
Manufacturer Part Number
C8051F411-GMR
Description
Microcontrollers (MCU) 50 MIPS 32KB 12ADC RTCLOCK 28 PIN MCU
Manufacturer
Silicon Laboratories Inc
Datasheet
1.C8051F410DK.pdf
(270 pages)
Specifications of C8051F411-GMR
Processor Series
C8051F4x
Core
8051
Data Bus Width
8 bit
Program Memory Type
Flash
Program Memory Size
32 KB
Data Ram Size
2.25 KB
Interface Type
I2C, SMBus, SPI, UART
Maximum Clock Frequency
50 MHz
Number Of Programmable I/os
20
Number Of Timers
4
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
QFN
3rd Party Development Tools
PK51, CA51, A51, ULINK2
Development Tools By Supplier
C8051F410DK
Minimum Operating Temperature
- 40 C
On-chip Adc
12 bit, 20 Channel
On-chip Dac
12 bit, 2 Channel
Package
28QFN EP
Device Core
8051
Family Name
C8051F41x
Maximum Speed
50 MHz
Ram Size
2.25 KB
Operating Supply Voltage
1.8|2.5|3.3|5 V
Operating Temperature
-40 to 85 °C
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F411-GMR
Manufacturer:
SiliconL
Quantity:
3 000
Part Number:
C8051F411-GMR
Manufacturer:
SILICON LABS/芯科
Quantity:
20 000
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6.
The C8051F41x devices include two 12-bit current-mode Digital-to-Analog Converters (IDACs). The maxi-
mum 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). When both IDACs are enabled, their outputs may
be routed to individual pins or merged onto a single pin. 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.
6.1.
A flexible output update mechanism allows for seamless full-scale changes and supports jitter-free
updates for waveform generation. Three update modes are provided, allowing IDAC output updates on a
write to the IDAC’s data register, on a Timer overflow, or on an external pin edge.
6.1.1. Update Output On-Demand
In its default mode (IDAnCN.[6:4] = ‘111’) the IDAC output is updated “on-demand” with a write to the data
register high byte (IDAnH). It is important to note that in this mode, writes to the data register low byte
(IDAnL) are held and have no effect on the IDAn output until a write to IDAnH takes place. Since data from
both the high and low bytes of the data register are immediately latched to IDAn after a write to IDAnH, the
write sequence when writing a full 12-bit word to the IDAC data registers should be IDAnL followed
by IDAnH . When the data word is left justified, the IDAC can be used in 8-bit mode by initializing IDAnL to
the desired value (typically 0x00), and writing data only to IDA0H.
12-Bit Current Mode DACs (IDA0 and IDA1)
IDAC Output Scheduling
IDAnOMD1
IDAnOMD0
IDAnRJST
IDAnCM2
IDAnCM1
IDAnCM0
IDAnEN
Figure 6.1. IDAC Functional Block Diagram
8
4
Rev. 1.1
12
IDAn
C8051F410/1/2/3
IDAn
Output
69
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