STEVAL-ISB005V1 STMicroelectronics, STEVAL-ISB005V1 Datasheet - Page 27
STEVAL-ISB005V1
Manufacturer Part Number
STEVAL-ISB005V1
Description
BOARD EVAL CHARGER ST7260/L6924D
Manufacturer
STMicroelectronics
Type
Battery Managementr
Specifications of STEVAL-ISB005V1
Main Purpose
Power Management, Battery Charger
Embedded
Yes, MCU, 8-Bit
Utilized Ic / Part
L6924, ST72F63BK6M1
Primary Attributes
1 Cell- Li-Ion / Li-Pol, 5 V (USB Input)
Secondary Attributes
Powered by Wall Adaptor Also, LED Status Indicators
Input Voltage
5 V
Product
Power Management Modules
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
L6924D, ST7260
Other names
497-8428
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
STEVAL-ISB005V1
Manufacturer:
STMicroelectronics
Quantity:
1
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ST7260xx
Note:
7.3
7.3.1
Figure 12. Reset timing diagram
Refer to Electrical Characteristics for values of t
Clock system
General description
The MCU accepts either a crystal or ceramic resonator, or an external clock signal to drive
the internal oscillator. The internal clock (f
frequency (f
clock used). The internal clock is further divided by 2 by setting the SMS bit in the
Miscellaneous Register.
Using the OSC24/12 bit in the option byte, a 12 MHz or a 24 MHz external clock can be
used to provide an internal frequency of either 2, 4 or 8 MHz while maintaining a 6 MHz for
the USB (refer to
The internal clock signal (f
signal consists of a square wave with a duty cycle of 50%.
The internal oscillator is designed to operate with an AT-cut parallel resonant quartz or
ceramic resonator in the frequency range specified for f
recommended when using a crystal, and
crystal and associated components should be mounted as close as possible to the input
pins in order to minimize output distortion and start-up stabilisation time.
V
OSCIN
f
CPU
DD
RESET
PC
WATCHDOG RESET
OSC
t
DDR
), which is divided by 3 (and by 2 or 4 for USB, depending on the external
t
Figure
OXOV
15).
CPU
) is also routed to the on-chip peripherals. The CPU clock
Table 9
CPU
) is derived from the external oscillator
DDR
lists the recommended capacitance. The
, t
OXOV
4096 CPU
CYCLES
osc
CLOCK
DELAY
, V
. The circuit shown in
IT+
Reset and clock management
FFFE
, V
IT-
and V
FFFF
hys
Figure 14
27/139
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