ST7260E1 STMicroelectronics, ST7260E1 Datasheet - Page 35

• Manufacturer Part Number: ST7260E1
• Description: LOW SPEED USB 8-BIT MCU FAMILY WITH UP TO 8K FLASH/ROM AND SERIAL COMMUNICATION INTERFACE (SCI)
• Manufacturer: STMicroelectronics

Specifications of ST7260E1

• 4 Or 8 Kbytes Program Memory: high density Flash (HDFlash), or FastROM with readout and write protection

ST7260xx
Note:
The MCU will remain in Wait mode until a Reset or an Interrupt occurs, causing it to wake
up.
Refer to
Related documentation
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●
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Figure 18. Wait mode flowchart
Before servicing an interrupt, the CC register is pushed on the stack. The I-Bit is set during
the interrupt routine and cleared when the CC register is popped.
AN 980: ST7 keypad decoding techniques, implementing wake-up on keystroke
AN1014: How to minimize the ST7 power consumption
AN1605: Using an active RC to wakeup the ST7LITE0 from power saving mode
Figure
18.
N
INTERRUPT
Y
OSCILLATOR
PERIPH. CLOCK
CPU CLOCK
I-BIT
N
OR SERVICE INTERRUPT
OSCILLATOR
PERIPH. CLOCK
CPU CLOCK
FETCH RESET VECTOR
I-BIT
WFI INSTRUCTION
4096 CPU CLOCK
CYCLES DELAY
IF RESET
RESET
Y
ON
ON
OFF
CLEARED
ON
ON
ON
SET
Power saving modes
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