C8051F501-IQ Silicon Laboratories Inc, C8051F501-IQ Datasheet - Page 146

• Manufacturer Part Number: C8051F501-IQ
• Description: IC 8051 MCU 64K FLASH 48-QFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F50xr

Specifications of C8051F501-IQ

• Program Memory Type: FLASH
• Program Memory Size: 64KB (64K x 8)
• Package / Case: 48-QFP
• Mfg Application Notes: LIN Bootloader AppNote
• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 50MHz
• Connectivity: EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: POR, PWM, Temp Sensor, WDT
• Number Of I /o: 40
• Ram Size: 4.25K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.25 V
• Data Converters: A/D 32x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Processor Series: C8051F5x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 4.25 KB
• Interface Type: I2C/SPI/UART
• Maximum Clock Frequency: 50 MHz
• Number Of Programmable I/os: 40
• Number Of Timers: 4
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051F500DK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 32-ch x 12-bit
• Package: 48PQFP
• Device Core: 8051
• Family Name: C8051F50x
• Maximum Speed: 50 MHz
• Operating Supply Voltage: 2.5|3.3|5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 336-1527 - KIT DEV FOR C8051F50X
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1512

C8051F50x/F51x
SFR Definition 17.2. RSTSRC: Reset Source
SFR Address = 0xEF; SFR Page = 0x00
146
Note: Do not use read-modify-write operations on this register
Name
Reset
Bit
Type
7
6
5
4
3
2
1
0
Bit
FERROR Flash Error Reset Flag.
WDTRSF Watchdog Timer Reset Flag. N/A
MCDRSF Missing Clock Detector
C0RSEF Comparator0 Reset Enable
SWRSF
PINRSF
Unused
PORSF
Name
R
7
0
Unused.
and Flag.
Software Reset Force and
Flag.
Enable and Flag.
Power-On/V
Reset Flag, and V
Reset Enable.
HW Pin Reset Flag.
FERROR
Varies
R
6
Description
DD
C0RSEF
Monitor
Varies
R/W
DD
5
monitor
SWRSF
Varies
R/W
Rev. 1.2
4
Don’t care.
N/A
Writing a 1 enables
Comparator0 as a reset
source (active-low).
Writing a 1 forces a sys-
tem reset.
Writing a 1 enables the
Missing Clock Detector.
The MCD triggers a reset
if a missing clock condition
is detected.
Writing a 1 enables the
V
source.
Writing 1 to this bit
before the V
is enabled and stabilized
may cause a system
reset.
N/A
DD
monitor as a reset
WDTRSF
Varies
Write
R
3
DD
monitor
MCDRSF
Varies
R/W
2
0
Set to 1 if Flash
read/write/erase error
caused the last reset.
Set to 1 if Comparator0
caused the last reset.
Set to 1 if last reset was
caused by a write to
SWRSF.
Set to 1 if Watchdog Timer
overflow caused the last
reset.
Set to 1 if Missing Clock
Detector timeout caused
the last reset.
Set to 1 anytime a power-
on or V
occurs.
When set to 1 all other
RSTSRC flags are inde-
terminate.
Set to 1 if RST pin caused
the last reset.
PORSF
Varies
R/W
DD
1
Read
monitor reset
PINRSF
Varies
R
0