C8051F337-GM Silicon Laboratories Inc, C8051F337-GM Datasheet - Page 102

• Manufacturer Part Number: C8051F337-GM
• Description: IC MCU 16K FLASH 20QFN
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F33xr

Specifications of C8051F337-GM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 17
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-QFN
• Processor Series: C8051F3x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 768 B
• Interface Type: I2C, SPI, UART
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 17
• Number Of Timers: 4
• Operating Supply Voltage: 2.7 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: KSK-SL-TOOLSTICK, PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051F336DK
• Minimum Operating Temperature: - 40 C
• For Use With: 336-1451 - ADAPTER PROGRAM TOOLSTICK F330
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details
• Other names: 336-1428-5

C8051F336/7/8/9
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
Important Note: If the V
is selected as a reset source. Selecting the V
lized may cause a system reset. In some applications, this reset may be undesirable. If this is not desirable
in the application, a delay should be introduced between enabling the monitor and selecting it as a reset
source. The procedure for enabling the V
state is shown below:
1. Enable the V
2. If necessary, wait for the V
3. Select the V
See Figure 17.2 for V
monitor reset. See
istics of the V
102
DD
monitor will still be disabled after the reset.
DD
DD
DD
monitor.
RST
monitor as a reset source (PORSF bit in RSTSRC = ‘1’).
Section “6. Electrical Characteristics” on page 27
monitor (VDMEN bit in VDM0CN = ‘1’).
, the CIP-51 will be released from the reset state. Note that even though internal data
DD
DD
monitor timing; note that the power-on-reset delay is not incurred after a V
monitor is being turned on from a disabled state, it should be enabled before it
DD
monitor to stabilize.
DD
DD
Monitor
monitor is disabled by code and a software reset is performed, the
DD
monitor and configuring it as a reset source from a disabled
DD
monitor as a reset source before it is enabled and stabi-
Rev.1.0
DD
to drop below V
for complete electrical character-
RST
, the power supply
DD
dropped below
DD
returns
DD
DD