ST72F621L4M1 STMicroelectronics, ST72F621L4M1 Datasheet - Page 11

• Manufacturer Part Number: ST72F621L4M1
• Description: IC MCU 8BIT LS 16K 34-SOIC
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST72F621L4M1

• Core Processor: ST7
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI, USB
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 23
• 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: 34-SOIC (7.5mm Width)
• 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: 23
• Number Of Timers: 2
• Operating Supply Voltage: 4 V to 5.5 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• 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: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: In Transition
• Other names: 497-2112-5

3 REGISTER & MEMORY MAP
As shown in the
addressing 64K bytes of memories and I/O regis-
ters.
The available memory locations consist of 64
bytes of register locations, 768 bytes of RAM and
up to 16 Kbytes of user program memory. The
RAM space includes up to 128 bytes for the stack
from 0100h to 017Fh.
The highest address bytes contain the user reset
and interrupt vectors.
Figure 7. Memory Map
E000h
FFFFh
FFDFh
FFE0h
0000h
003Fh
0040h
0340h
BFFFh
C000h
033Fh
Figure
Interrupt & Reset Vectors
Program Memory
8 KBytes
7, the MCU is capable of
768 Bytes RAM
HW Registers
(see
(see
Reserved
16 KBytes
384 Bytes RAM
Table
Table
2)
6)
Doc ID 6996 Rev 5
IMPORTANT: Memory locations marked as “Re-
served” must never be accessed. Accessing a re-
served area can have unpredictable effects on the
device.
00FFh
01BFh
00FFh
017Fh
017Fh
033Fh
0040h
0040h
16-bit Addressing
16-bit Addressing
16-bit Addressing
16-bit Addressing
Short Addressing
Short Addressing
RAM (zero page)
RAM (zero page)
(128 Bytes)
448 Bytes
(128 Bytes)
64 Bytes
192 Bytes
or Stack
192 Bytes
or Stack
RAM
RAM
RAM
RAM
ST7262xxx
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