ST72F621J4T1 STMicroelectronics, ST72F621J4T1 Datasheet - Page 106

• Manufacturer Part Number: ST72F621J4T1
• Description: IC MCU 8BIT LS 16K 44-TQFP
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST72F621J4T1

• Core Processor: ST7
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI, USB
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 31
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 44-TQFP, 44-VQFP
• Processor Series: ST72F6x
• Core: ST7
• Data Bus Width: 8 bit
• Data Ram Size: 768 B
• Interface Type: SCI, SPI, USB
• Maximum Clock Frequency: 12 MHz
• Number Of Programmable I/os: 31
• Number Of Timers: 2
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: 0 C
• On-chip Adc: 10 bit, 8 Channel
• For Use With: 497-5046 - KIT TOOL FOR ST7/UPSD/STR7 MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details
• Other names: 497-2111

CLOCK AND TIMING CHARACTERISTICS (Cont’d)
12.5.3 External Clock Source
Note:
1. Refer to
Figure 58. Typical Application with an External Clock Source
12.5.4 Crystal Oscillator Output Drive Level
Figure 59. Typical Application with a Crystal Resonator
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t
t
w(OSCINH)
V
w(OSCINL)
Symbol
V
t
t
r(OSCIN)
f(OSCIN)
P
Symbol
OSCINH
OSCINL
OSCOUT
I
L
V
V
Figure 58
OSCIN input pin high level voltage
OSCIN input pin low level voltage
OSCIN high or low time
OSCIN rise or fall time
OSCx Input leakage current
OSCINH
OSCINL
Oscillator OSCOUT pin drive level
EXTERNAL
CLOCK SOURCE
C
for more information.
L2
Parameter
C
t
r(OSCIN)
L1
Parameter
1)
1)
RESONATOR
200Ω<R
t
f(OSCIN)
S
<400Ω
OSCOUT
OSCIN
90%
see
V
SS
10%
≤V
Figure 58
OSCIN
OSCOUT
Doc ID 6996 Rev 5
IN
Conditions
≤V
At 5V / 25°C
DD
t
Not connected internally
w(OSCINH)
R
F
Conditions
I
L
i
2
t
w(OSCINL)
0.7xV
Min
V
15
SS
f
DD
OSC
ST72XXX
Typ
ST72XXX
f
OSC
Typ
0.3xV
1
Max
V
15
±1
DD
DD
Unit
mW
Unit
μA
ns
V