C8051F330DR Silicon Labs, C8051F330DR Datasheet - Page 207
C8051F330DR
Manufacturer Part Number
C8051F330DR
Description
8-bit Microcontrollers - MCU 8kB 10ADC
Manufacturer
Silicon Labs
Datasheet
1.C8051F330DR.pdf
(210 pages)
Specifications of C8051F330DR
Product Category
8-bit Microcontrollers - MCU
Core
8051
Data Bus Width
8 bit
Maximum Clock Frequency
25 MHz
Program Memory Size
8 KB
Data Ram Size
768 B
On-chip Adc
No
Operating Supply Voltage
2.7 V to 3.6 V
Package / Case
QFN-20
Mounting Style
SMD/SMT
Data Rom Size
128 B
Interface Type
I2C, SPI, UART
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Number Of Programmable I/os
17
Number Of Timers
4
On-chip Dac
No
Processor Series
C8051
Program Memory Type
Flash
Factory Pack Quantity
1500
Supply Voltage - Max
3.6 V
Supply Voltage - Min
2.7 V
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20.2. C2 Pin Sharing
The C2 protocol allows the C2 pins to be shared with user functions so that in-system debugging and
Flash programming may be performed. This is possible because C2 communication is typically performed
when the device is in the halt state, where all on-chip peripherals and user software are stalled. In this
halted state, the C2 interface can safely ‘borrow’ the C2CK (RST) and C2D (P2.0) pins. In most applica-
tions, external resistors are required to isolate C2 interface traffic from the user application. A typical isola-
tion configuration is shown in Figure 20.1.
The configuration in Figure 20.1 assumes the following:
Additional resistors may be necessary depending on the specific application.
1. The user input (b) cannot change state while the target device is halted.
2. The RST pin on the target device is used as an input only.
/Reset (a)
Output (c)
Input (b)
Figure 20.1. Typical C2 Pin Sharing
C2 Interface Master
Rev. 1.7
C8051F330/1/2/3/4/5
C2CK
C2D
C8051Fxxx
211
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