ST7LITEU09 STMicroelectronics, ST7LITEU09 Datasheet - Page 79

• 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
Auto reload register (ATRH)
Reset value: 0000 0000 (00h)
Auto reload register (ATRL)
Reset value: 0000 0000 (00h)
Bits 15:12 = Reserved, must be kept cleared.
Bits 11:0 = ATR[11:0] Autoreload Register.
PWM0 duty cycle register high (DCR0H)
Reset value: 0000 0000 (00h)
PWM0 duty cycle register low (DCR0L)
Reset Value: 0000 0000 (00h)
Bits 15:12 = Reserved, must be kept cleared.
Bits 11:0 = DCR[11:0] PWMx duty cycle value
DCR7
ATR7
15
15
This is a 12-bit register which is written by software. The ATR register value is
automatically loaded into the upcounter when an overflow occurs. The register value is
used to set the PWM frequency.
This 12-bit value is written by software. The high register must be written first.
In PWM mode (OE0=1 in the PWMCR register) the DCR[11:0] bits define the duty
cycle of the PWM0 output signal (see
the PWMCR register) they define the value to be compared with the 12-bit upcounter
value.
0
7
0
7
DCR6
ATR6
0
0
DCR5
ATR5
0
0
DCR4
ATR4
0
0
Read/Write
Read/Write
Read/Write
Read/Write
Figure
ATR11
DCR11
DCR3
ATR3
38). In Output Compare mode, (OE0=0 in
ATR10
DCR10
DCR2
ATR2
On-chip peripherals
DCR9
DCR1
ATR9
ATR1
DCR8
DCR0
ATR8
ATR0
0
8
0
8
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