C8051F330R Silicon Laboratories Inc, C8051F330R Datasheet - Page 77
C8051F330R
Manufacturer Part Number
C8051F330R
Description
IC 8051 MCU 8K FLASH 20MLP
Manufacturer
Silicon Laboratories Inc
Series
C8051F33xr
Datasheet
1.C8051F330R.pdf
(208 pages)
Specifications of C8051F330R
Core Processor
8051
Core Size
8-Bit
Speed
25MHz
Connectivity
SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
POR, PWM, Temp Sensor, WDT
Number Of I /o
17
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 16x10b; D/A 1x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
20-QFN
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Other names
336-1069-2
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Bit7:
Bit6:
Bit5:
Bits4-3:
Bit2:
Bit1:
Bit0:
R/W
CY
Bit7
CY: Carry Flag.
This bit is set when the last arithmetic operation resulted in a carry (addition) or a borrow
(subtraction). It is cleared to logic 0 by all other arithmetic operations.
AC: Auxiliary Carry Flag
This bit is set when the last arithmetic operation resulted in a carry into (addition) or a borrow
from (subtraction) the high order nibble. It is cleared to logic 0 by all other arithmetic opera-
tions.
F0: User Flag 0.
This is a bit-addressable, general purpose flag for use under software control.
RS1-RS0: Register Bank Select.
These bits select which register bank is used during register accesses.
OV: Overflow Flag.
This bit is set to 1 under the following circumstances:
• An ADD, ADDC, or SUBB instruction causes a sign-change overflow.
• A MUL instruction results in an overflow (result is greater than 255).
• A DIV instruction causes a divide-by-zero condition.
The OV bit is cleared to 0 by the ADD, ADDC, SUBB, MUL, and DIV instructions in all other
cases.
F1: User Flag 1.
This is a bit-addressable, general purpose flag for use under software control.
PARITY: Parity Flag.
This bit is set to logic 1 if the sum of the eight bits in the accumulator is odd and cleared if the
sum is even.
RS1
0
0
1
1
R/W
AC
Bit6
RS0
0
1
0
1
R/W
Bit5
F0
Figure 9.6. PSW: Program Status Word
Register Bank
RS1
R/W
Bit4
0
1
2
3
C8051F330/1, C8051F330D
Rev. 1.2
RS0
R/W
Bit3
0x00 - 0x07
0x08 - 0x0F
0x10 - 0x17
0x18 - 0x1F
Address
R/W
OV
Bit2
R/W
Bit1
F1
(bit addressable)
PARITY
Bit0
R
SFR Address:
00000000
Reset Value
0xD0
77
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