ST72F621J4B1 STMicroelectronics, ST72F621J4B1 Datasheet - Page 22

• Manufacturer Part Number: ST72F621J4B1
• Description: IC MCU 8BIT LS 16K 42-PDIP
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST72F621J4B1

• 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: 42-DIP (0.600", 15.24mm)
• 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
• Operating Supply Voltage: 4 V to 5.5 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: Through Hole
• Minimum Operating Temperature: 0 C
• On-chip Adc: 10 bit
• For Use With: 497-5046 - KIT TOOL FOR ST7/UPSD/STR7 MCU
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: In Transition
• Other names: 497-2110-5

ST7262xxx
Figure 16.
Note: Typical hysteresis (V
Figure 17. Temporization Timing Diagram after an internal Reset
Figure 18. Reset Timing Diagram
Note: Refer to Electrical Characteristics for values of t
22/139
V
RESET
DD
V
OSCIN
f
CPU
DD
RESET
PC
V
Low Voltage Reset
IT+
V
Addresses
DD
t
DDR
t
OXOV
IT+
Signal Output
-V
IT-
V
IT+
) of 250 mV is expected.
V
IT-
(514 CPU clock cycles)
$FFFE
Temporization
Doc ID 6996 Rev 5
DDR
514 CPU
, t
CYCLES
CLOCK
DELAY
OXOV
FFFE
, V
IT+
and V
FFFF
IT-.