ST72325J4 STMicroelectronics, ST72325J4 Datasheet - Page 151

• Manufacturer Part Number: ST72325J4
• Description: 8-BIT MCU WITH 16 TO 60K FLASH/ROM, ADC, CSS, FIVE TIMERS, SPI, SCI, I2C INTERFACE
• Manufacturer: STMicroelectronics

Specifications of ST72325J4

• Hdflash Endurance: 100 cycles, data retention
• Clock Sources: crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock
• Four Power Saving Modes: Halt, Active-Halt,Wait and Slow
• Main Clock Controller With: Real time base, Beep and Clock-out capabilities
• Two 16-bit Timers With: 2 input captures, 2 output compares, external clock input on one timer, PWM and pulse generator modes
• 8-bit Pwm Auto-reload Timer With: 2 input captures, 4 PWM outputs, output compare and time base interrupt, external clock with event detector

Figure 76. Typical Application with a Crystal or Ceramic Resonator
1. The relatively low value of the RF resistor, offers a good protection against issues resulting from use in a humid envi-
ronment, due to the induced leakage and the bias condition change. However, it is recommended to take this point into
account if the µC is used in tough humidity conditions.
2. For C
for high-frequency applications and selected to match the requirements of the crystal or resonator. C
ally the same size. The crystal manufacturer typically specifies a load capacitance which is the series combination of C
and C
mate of the combined pin and board capacitance).
WHEN RESONATOR WITH
INTEGRATED CAPACITORS
L2
. PCB and MCU pin capacitance must be included when sizing C
L1
and C
L2
it is recommended to use high-quality ceramic capacitors in the 5-pF to 25-pF range (typ.) designed
C
L2
C
L1
RESONATOR
OSC2
OSC1
R
F
V
Ref
DD
/2
i
AMPLIFIER
2
L1
LINEAR
and C
L2
(10 pF can be used as a rough esti-
f
OSC
FEEDBACK
LOOP
POWER DOWN
ST72XXX
LOGIC
L1
and C
ST72325xx
L2,
are usu-
151/197
L1