ST72324BK2 STMicroelectronics, ST72324BK2 Datasheet - Page 151

• Manufacturer Part Number: ST72324BK2
• Description: 5V RANGE 8-BIT MCU WITH 8 TO 32K FLASH/ROM, 10-BIT ADC, 4 TIMERS, SPI, SCI INTERFACE
• Manufacturer: STMicroelectronics

Specifications of ST72324BK2

• Hdflash Endurance: 1 kcycle at 55 °C, data retention 40 years at 85 °C
• Clock Sources: crystal/ceramic resonator oscillators, int. RC osc. and ext. clock input
• 4 Power Saving Modes: Slow, Wait, Active-halt, and Halt

ST72324Bxx
Figure 66. Typical application with a crystal or ceramic resonator (8/16 Kbyte Flash
32 Kbyte Flash and ROM devices
Table 96.
1. The oscillator selection can be optimized in terms of supply current using an high quality resonator with
2. Data based on characterization results, not tested in production. The relatively low value of the RF resistor,
3. For C
Symbol
f
C
C
OSC
R
small RS value. Refer to crystal/ceramic resonator manufacturer for more details.
offers a good protection against issues resulting from use in a humid environment, due to the induced
leakage and the bias condition change. However, it is recommended to take this point into account if the
microcontroller is used in tough humidity conditions.
designed for high-frequency applications and selected to match the requirements of the crystal or
resonator. C
capacitance which is the series combination of C
included when sizing C
capacitance).
i
2
L1
L2
F
L1
When resonator with
integrated capacitors
Oscillator frequency
Feedback resistor
Recommended load
capacitance versus equivalent
serial resistance of the crystal or
ceramic resonator (R
OSC2 driving current
and C
and ROM devices)
Crystal and ceramic resonator oscillators (32 Kbyte Flash and ROM
devices)
L1
L2
and C
it is recommended to use high-quality ceramic capacitors in the 5-pF to 25-pF range (typ.)
Parameter
L2
, are usually the same size. The crystal manufacturer typically specifies a load
L1
C
and C
L2
(2)
C
(1)
L1
S
L2
)
(3)
(10 pF can be used as a rough estimate of the combined pin and board
Resonator
f
f
f
f
V
OSC
OSC
OSC
OSC
DD
L1
= 5V, V
and C
= 1 to 2 MHz
= 2 to 4 MHz
= 4 to 8 MHz
= 8 to 16 MHz
OSC1
OSC2
Conditions
L2
IN
. PCB and MCU pin capacitance must be
= V
R
LP oscillator
MP oscillator
MS oscillator
HS oscillator
F
SS
i
2
Electrical characteristics
Min
20
20
20
15
15
1
ST72XXX
f
Typ
160
310
610
OSC
80
Max Unit
150
250
460
910
16
40
60
50
35
35
151/193
MHz
kΩ
pF
µA