ST92F120V1Q7 STMicroelectronics, ST92F120V1Q7 Datasheet - Page 54

• Manufacturer Part Number: ST92F120V1Q7
• Description: Microcontrollers (MCU) Flash 128K SPI/I2C
• Manufacturer: STMicroelectronics

Specifications of ST92F120V1Q7

• Data Bus Width: 8 bit, 16 bit
• Program Memory Type: Flash
• Program Memory Size: 128 KB
• Data Ram Size: 4 KB
• Interface Type: I2C, SPI
• Maximum Clock Frequency: 24 MHz
• Number Of Programmable I/os: 77
• Number Of Timers: 5
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Package / Case: PQFP-100
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit, 16 Channel
• Lead Free Status / Rohs Status: No

ST92F120 - REGISTER AND MEMORY MAP
4 REGISTER AND MEMORY MAP
4.1 INTRODUCTION
The ST92F120 register map, memory map and
peripheral options are documented in this section.
Use this reference information to supplement the
functional descriptions given elsewhere in this
document.
4.2 MEMORY CONFIGURATION
The Program memory space of the ST92F120 up
to 128K bytes of directly addressable on-chip
memory, is fully available to the user.
4.2.1 Reset Vector Location
In 128k devices, the reset vector is located in
01E000h.
In 60k devices, the reset vector is located in
000000h.
4.2.2 Location of Vector for External Watchdog
Refresh
If an external watchdog is used, it must be re-
freshed during TestFlash execution by a user writ-
ten routine. This routine has to be located in Flash
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memory, the address where the routine starts has
to be written in 000006h (one word) while the seg-
ement where the routine is located has to be writ-
ten in 000009h (one byte).
This routine is called at least once every time that
the TestFlash executes an EEPROM write opera-
tion. If the write operation has a long duration, the
user routine is called with a rate fixed by location
000008h with an internal clock frequency of 2
MHz, location 000008h fixes the number of mill-
seconds to wait between two calls of the user rou-
tine.
Table 13. User Routine Parameters
If location 000006h to 000007h is virgin (FFFFh),
the user routine is not called.
Location
000006h to
000007h
000008h
000009h
Size
2 bytes
1 byte
1 byte
Description
User routine address
ms rate at 2 MHz.
User routine segment