ST72F321AR9TA STMicroelectronics, ST72F321AR9TA Datasheet - Page 14

• Manufacturer Part Number: ST72F321AR9TA
• Description: IC MCU 8BIT 60KB FLASH 64-TQFP
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST72F321AR9TA

• Core Processor: ST7
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, SCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 48
• Program Memory Size: 60KB (60K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 3.8 V ~ 5.5 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP, 64-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

ST72321Rx ST72321ARx ST72321Jx
3 REGISTER & MEMORY MAP
As shown in
dressing 64K bytes of memories and I/O registers.
The available memory locations consist of 128
bytes of register locations, up to 2Kbytes of RAM
and up to 60Kbytes of user program memory. The
RAM space includes up to 256 bytes for the stack
from 0100h to 01FFh.
The highest address bytes contain the user reset
and interrupt vectors.
Figure 4. Memory Map
14/193
FFFFh
FFDFh
FFE0h
0080h
0FFFh
0000h
007Fh
0880h
087Fh
1000h
(2048, 1536 or 1024 Bytes)
Interrupt & Reset Vectors
Figure
(60K, 48K or 32K)
Program Memory
HW Registers
(see
(see
Reserved
RAM
Table
Table
4, the MCU is capable of ad-
3)
8)
or 047Fh
or 067Fh
or 087Fh
00FFh
01FFh
0080h
0100h
0200h
16-bit Addressing
Short Addressing
RAM (zero page)
256 Bytes Stack
IMPORTANT: Memory locations marked as “Re-
served” must never be accessed. Accessing a re-
seved area can have unpredictable effects on the
device.
Related Documentation
AN 985: Executing Code in ST7 RAM
RAM
1000h
4000h
8000h
FFFFh
60 KBytes
48 KBytes
32 KBytes