ST7FLITE20F1B6 STMicroelectronics, ST7FLITE20F1B6 Datasheet - Page 55

• Manufacturer Part Number: ST7FLITE20F1B6
• Description: IC MCU 8BIT 8K FLASH 20-DIP
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST7FLITE20F1B6

• Core Processor: ST7
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 15
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Voltage - Supply (vcc/vdd): 2.4 V ~ 5.5 V
• Data Converters: A/D 7x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-DIP (0.300", 7.62mm)
• Processor Series: ST7FLITE2x
• Core: ST7
• Data Bus Width: 8 bit
• Development Tools By Supplier: ST7FLITE-SK/RAIS, ST7MDT10-DVP3, ST7MDT10-EMU3, STX-RLINK
• For Use With: 497-5858 - EVAL BOARD PLAYBACK ST7FLITE497-5517 - EVAL BOARD 1PHASE ENERGY METER497-5049 - KIT STARTER RAISONANCE ST7FLITE
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

11.2 12-BIT AUTORELOAD TIMER 2 (AT2)
11.2.1 Introduction
The 12-bit Autoreload Timer can be used for gen-
eral-purpose timing functions. It is based on a free-
running 12-bit upcounter with an input capture reg-
ister and four PWM output channels. There are 6
external pins:
– Four PWM outputs
– ATIC pin for the Input Capture function
– BREAK pin for forcing a break condition on the
11.2.2 Main Features
■
Figure 34. Block Diagram
ATIC
PWM outputs
12-bit upcounter with 12-bit autoreload register
(ATR)
f
(1 ms
@ 8MHz)
LTIMER
timebase
32 MHz
f
CPU
12-BIT DUTY CYCLE VALUE (shadow)
Preload
DCR0H
4 PWM Channels
ATCSR
0
ATICR
Preload
DCR0L
on OVF Event
IF TRAN=1
ICF
12-BIT INPUT CAPTURE REGISTER
ICIE
f
COUNTER
IC INTERRUPT
CK1
REQUEST
CNTR
ATR
CK0
12-BIT AUTORELOAD REGISTER
OVF
■
■
■
■
12-BIT UPCOUNTER
– Programmable duty-cycles
– Polarity control
– Programmable output modes
– Maskable Compare interrupt
– 12-bit input capture register (ATICR)
– Triggered by rising and falling edges
– Maskable IC interrupt
Maskable overflow interrupt
Generation of four independent PWMx signals
Frequency 2KHz-4MHz (@ 8 MHz f
Input Capture
CMPFx bit
COMP-
PARE
OVFIE
CMPF0
CMPF1
CMPF2
CMPF3
CMPIE
OVF INTERRUPT
REQUEST
f
PWM
OPx bit
POL-
ARITY
CMP
REQUEST
INTERRUPT
OEx bit
CPU
ST7LITE2
)
PWMx
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