C8051F507-IM Silicon Laboratories Inc, C8051F507-IM Datasheet - Page 142
![IC 8051 MCU 32K FLASH 32-QFN](/photos/12/16/121687/c8051f507-im_sml.jpg)
C8051F507-IM
Manufacturer Part Number
C8051F507-IM
Description
IC 8051 MCU 32K FLASH 32-QFN
Manufacturer
Silicon Laboratories Inc
Series
C8051F50xr
Specifications of C8051F507-IM
Program Memory Type
FLASH
Program Memory Size
32KB (32K x 8)
Package / Case
32-QFN
Mfg Application Notes
LIN Bootloader AppNote
Core Processor
8051
Core Size
8-Bit
Speed
50MHz
Connectivity
SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
POR, PWM, Temp Sensor, WDT
Number Of I /o
25
Ram Size
4.25K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.25 V
Data Converters
A/D 25x12b
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
25
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
A/d Bit Size
12 bit
A/d Channels Available
32
Height
0.83 mm
Length
5 mm
Supply Voltage (max)
5.25 V
Supply Voltage (min)
1.8 V
Width
5 mm
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
336-1525-5
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C8051F50x/F51x
17.1. Power-On Reset
During power-up, the device is held in a reset state and the RST pin is driven low until V
V
increases (V
power-on and V
On exit from a power-on reset, the PORSF flag (RSTSRC.1) is set by hardware to logic 1. When PORSF is
set, all of the other reset flags in the RSTSRC Register are indeterminate (PORSF is cleared by all other
resets). Since all resets cause program execution to begin at the same location (0x0000) software can
read the PORSF flag to determine if a power-up was the cause of reset. The content of internal data mem-
ory should be assumed to be undefined after a power-on reset. The V
power-on reset.
17.2. Power-Fail Reset/V
When a power-down transition or power irregularity causes V
monitor will drive the RST pin low and hold the CIP-51 in a reset state (see Figure 17.2). When V
to a level above V
memory contents are not altered by the power-fail reset, it is impossible to determine if V
the level required for data retention. If the PORSF flag reads 1, the data may no longer be valid. The V
monitor is enabled after power-on resets. Its defined state (enabled/disabled) is not altered by any other
reset source. For example, if the V
V
monitor must be enabled to the higher setting (VDMLVL = 1) and selected as a reset source if soft-
ware contains routines which erase or write Flash memory. If the V
set to the high level, any erase or write performed on Flash memory will cause a Flash Error device
reset.
142
RST
DD
. A delay occurs before the device is released from reset; the delay decreases as the V
monitor will still be disabled after the reset. To protect the integrity of Flash contents, the V
Logic HIGH
DD
Logic LOW
DD
ramp time is defined as how fast V
2.45
2.25
2.0
1.0
RST
monitor reset timing.
, the CIP-51 will be released from the reset state. Note that even though internal data
Figure 17.2. Power-On and V
/RST
V
RST
DD
DD
Monitor
Power-On
monitor is disabled by code and a software reset is performed, the
Reset
T
PORDelay
Rev. 1.2
DD
DD
ramps from 0 V to V
Monitor Reset Timing
DD
to drop below V
Monitor
Reset
VDD
DD
DD
monitor is enabled following a
monitor is not enabled and
RST
). Figure 17.2. plots the
RST
VDD
, the power supply
DD
DD
dropped below
settles above
DD
t
ramp time
DD
returns
DD
DD
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