ST92F120V1Q7 STMicroelectronics, ST92F120V1Q7 Datasheet - Page 53

• 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

In addition, the Code Update routine remaps the
interrupts in the TestFlash (ISR = 23h), and config-
ures I/O Ports P5.3 (SOUT0) and and P5.4
(CLKOUT0) as Alternate Functions.
Figure 26. Flash in-system Programming
BRGLR - R253
SOCR - R255
SICR - R254
Register
Jump to Flash
Code
Main
User
No
Value
TestFlash Code
04h
83h
01h
Initialization
= 0 ?
SOUT0
Start
Baud Rate Divider is 4
Synchronous Mode
Enable Serial
Yes
Interface
WFI
Notes
Load in-system
in internal RAM
prog routine
Code Update
Enable DMA
through SCI.
prog routine
Call in-system
Routine
HALT
ST92F120 - SINGLE VOLTAGE FLASH & EEPROM
Address
Match
(from SCI)
Test
Flash
Interrupt
Note: Four interrupt routines are used by the code
update routine: SCI Receiver Error Interrupt rou-
tine (vector in 0010h), SCI address Match Interrupt
routine (vector in 0012h), SCI Receiver Data
Ready Interrupt routine (vector in 0014h) and SCI
Transmitter Buffer Empty Interrupt routine (vector
in 0016h).
Internal RAM (User Code Example)
Prog 1st table
of data from
RAM in Flash
prog routine
Load 1st table
of data in RAM
through S.I.
Inc. Address
Address ?
In-system
Yes
Yes
virgin ?
Flash
RET
Last
Load 2nd table
of data in RAM
Erase sectors
through SCI
No
No
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