ST92F120V1Q7 STMicroelectronics, ST92F120V1Q7 Datasheet - Page 41

• 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

FUNCTIONAL DESCRIPTION (Cont’d)
3.2.3 Operation
The memory has a register interface mapped in
memory space (segment 22h). All operations are
enabled through the FCR (Flash Control Register)
ECR (EEPROM Control Register).
All operations on the Flash must be executed from
another memory (internal RAM, EEPROM, exter-
nal memory).
Flash (including TestFlash) and EEPROM have
duplicated sense amplifiers, so that one can be
read while the other is written. However simultane-
ous Flash and EEPROM write operations are for-
bidden.
An interrupt can be generated at the end of a
Flash or an EEPROM write operation: this inter-
rupt is multiplexed with an external interrupt EX-
TINTx (device dependent) to generate an interrupt
INTx.
The status of a write operation inside the Flash
and the EEPROM memories can be monitored
through the FESR[1:0] registers.
ST92F120 - SINGLE VOLTAGE FLASH & EEPROM
Control and Status registers are mapped in mem-
ory (segment 22h), as shown in the following fig-
ure.
Figure 22. Control and Status Register Map
During a write operation, if the power supply drops
or the RESET pin is activated, the write operation
is immediately interrupted. In this case the user
must repeat the last write operation following pow-
er on or reset.
224003h
224000h
224001h
224002h
Register Interface
ECR
FCR
FESR0
FESR1
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