C8051F236 Silicon Laboratories Inc, C8051F236 Datasheet - Page 95

• Manufacturer Part Number: C8051F236
• Description: IC 8051 MCU 8K FLASH 48TQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F2xxr

Specifications of C8051F236

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 32
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 1.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-TQFP, 48-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -

(Note: Do not use read-modify-write operations on this register.)
Bit7:
Bit6:
Bit5:
Bit4:
Read
Bit3:
Bit2:
Bit1:
Read
Bit0:
Bit7
-
RESERVED.
Not Used. Read only 0b.
C0RSEF: Comparator 0 Reset Enable and Flag
Write
0: Comparator 0 is not a reset source
1: Comparator 0 is a reset source (active low)
Read
Note: The value read from C0RSEF is not defined if Comparator 0 has not been enabled as
a reset source.
0: Source of prior reset was not from Comparator 0
1: Source of prior reset was from Comparator 0
SWRSF: Software Reset Force and Flag
Write
0: No Effect
1: Forces an internal reset. RST pin is not affected.
0: Prior reset source was not from write to the SWRSF bit.
1: Prior reset source was from write to the SWRSF bit.
WDTRSF: Watchdog Timer Reset Flag (Read only)
0: Source of prior reset was not from WDT timeout.
1: Source of prior reset was from WDT timeout.
MCDRSF: Missing Clock Detector Flag (Read only)
0: Source of prior reset was not from Missing Clock Detector timeout.
1: Source of prior reset was from Missing Clock Detector timeout.
PORSF: Power-On Reset Force and Flag
Write
0: No effect
1: Forces a Power-On Reset. RST is driven low.
0: Source of prior reset was not from POR.
1: Source of prior reset was from POR.
PINRSF: HW Pin Reset Flag
0: Source of prior reset was not from RST pin.
1: Source of prior reset was from RST pin.
Bit6
R
SFR Definition 12.2. RSTSRC: Reset Source
C0RSEF SWRSEF WDTRSF MCDRSF
R/W
Bit5
R/W
Bit4
Rev. 1.6
Bit3
R
Bit2
R
PORSF
R/W
Bit1
C8051F2xx
PINRSF
Bit0
R
SFR Address:
Reset Value
xxxxxxxx
0xEF
95