ST7LITEU09 STMicroelectronics, ST7LITEU09 Datasheet - Page 71

• Manufacturer Part Number: ST7LITEU09
• Description: ST7ULTRALITE - 8-BIT MCU WITH 2K SINGLE VOLTAGE FLASH MEMORY, ADC, TIMERS
• Manufacturer: STMicroelectronics

Specifications of ST7LITEU09

• 2k Bytes Single Voltage Flash Program Memory With Read-out Protection, In-circuit And In-application Programming (icp And Iap). 10k Write/erase Cycles Guaranteed, Data Retention: 20 years at 55°C
• 128 Bytes Data Eeprom. 300k Write/erase Cycles Guaranteed, Data Retention: 20 years at 55°C
• Clock Sources: internal trimmable 8MHz RC oscillator, internal low power, low frequency RC oscillator or external clock
• Five Power Saving Modes: Halt, Auto Wake Up from Halt, Active-Halt, Wait and Slow
• One 8-bit Lite Timer (lt) With Prescaler Including: watchdog, 1 realtime base and 1 input capture

ST7LITEU05 ST7LITEU09
11.1.5
Table 26.
11.1.6
Table 27.
Note:
Timebase Event
IC Event
Interrupt event
Active-Halt
Description of low power modes
Interrupts
Interrupt events
The TBF and ICF interrupt events are connected to separate interrupt vectors (see
Interrupts chapter).
They generate an interrupt if the enable bit is set in the LTCSR register and the interrupt
mask in the CC register is reset (RIM instruction).
Figure 36. Input capture timing diagram
Low power modes
Mode
Wait
Halt
LTICR REGISTER
13-bit COUNTER
ICF FLAG
Event
LTIC PIN
TBF
flag
ICF
f
f
OSC
CPU
0001h
(@ 8 MHz f
125 ns
0002h
xxh
OSC
control
Enable
TBIE
ICIE
bit
)
0003h
0004h
Lite timer stops counting
No effect on Lite timer
No effect on Lite timer
0005h
Description
from
Wait
Exit
Yes
Yes
04h
0006h
0007h
from
Exit
Halt
No
No
On-chip peripherals
LTIC REGISTER
07h
CLEARED
READING
BY S/W
Active-Halt
t
from
Exit
Yes
No
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