C8051F023R Silicon Laboratories Inc, C8051F023R Datasheet - Page 136

• Manufacturer Part Number: C8051F023R
• Description: IC 8051 MCU 64K FLASH 64TQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F02xr

Specifications of C8051F023R

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 32
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 4.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x8b, 8x10b; D/A 2x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP, 64-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: 336-1035-2

C8051F020/1/2/3
136
VDD = 2.7V to 3.6V; T
Internal Oscillator Frequency
Bit7:
Bits6-5:
Bit4:
Bit3:
Bit2:
Bits1-0:
Internal Oscillator Current
Consumption (from VDD)
MSCLKE
R/W
Bit7
PARAMETER
MSCLKE: Missing Clock Enable Bit
0: Missing Clock Detector Disabled
1: Missing Clock Detector Enabled; reset triggered if clock is missing for more than 100 µs
UNUSED. Read = 00b, Write = don't care
IFRDY: Internal Oscillator Frequency Ready Flag
0: Internal Oscillator Frequency not running at speed specified by the IFCN bits.
1: Internal Oscillator Frequency running at speed specified by the IFCN bits.
CLKSL: System Clock Source Select Bit
0: Uses Internal Oscillator as System Clock.
1: Uses External Oscillator as System Clock.
IOSCEN: Internal Oscillator Enable Bit
0: Internal Oscillator Disabled
1: Internal Oscillator Enabled
IFCN1-0: Internal Oscillator Frequency Control Bits
00: Internal Oscillator typical frequency is 2 MHz.
01: Internal Oscillator typical frequency is 4 MHz.
10: Internal Oscillator typical frequency is 8 MHz.
11: Internal Oscillator typical frequency is 16 MHz.
R/W
Table 14.1. Internal Oscillator Electrical Characteristics
Bit6
-
Figure 14.2. OSCICN: Internal Oscillator Control Register
a
= -40°C to +85°C
R/W
Bit5
-
OSCICN.[1:0] = 00
OSCICN.[1:0] = 01
OSCICN.[1:0] = 10
OSCICN.[1:0] = 11
IFRDY
CONDITIONS
OSCICN.2 = 1
R/W
Bit4
Rev. 1.4
CLKSL
R/W
Bit3
IOSCEN
R/W
Bit2
MIN
12.3
1.5
3.1
6.2
IFCN1
TYP
200
R/W
Bit1
16
2
4
8
MAX
19.2
2.4
4.8
9.6
IFCN0
R/W
Bit0
UNITS
MHz
µA
SFR Address:
00010100
Reset Value
0xB2