ST7LITE20F2, ST7LITE25F2 and ST7LITE29F2 are referred to as ST7LITE2. The ST7LITE2 is a member of the ST7 microcontroller family. All ST7 devices are based on a common industry-standard 8-bit core, featuring an enhanced instruction set.The ST7LITE2 features FLASH memory with byte-by-byte In-Circuit Programming (ICP) and In-Application Programming (IAP) capability.Under software control, the ST7LITE2 device can be placed in WAIT, SLOW, or HALT mode, reducing power consumption when the application is in idle or standby state.The enhanced instruction set and addressing modes of the ST7 offer both power and flexibility to software developers, enabling the design of highly efficient and compact application code. In addition to standard 8-bit data management, all ST7 microcontrollers feature true bit manipulation, 8×8 unsigned multiplication and indirect addressing modes.
Memories
8 Kbytes single voltage Flash Program memory with Read-out protection
In-circuit programming and in-application programming (ICP and IAP)
10K write/erase cycles guaranteed
Data retention: 20 years at 55 °C
Temperature ranges:
-40 °C to +85 °C
-40 °C to +105 °C
384 bytes RAM
Clock, reset and supply management
Enhanced reset system
Enhanced low voltage supervisor (LVD) for main supply and an auxiliary voltage detector (AVD) with interrupt capability for implementing safe power-down procedures
Clock sources: internal 1% RC oscillator, crystal/ceramic resonator or external clock
Internal 32-MHz input clock for auto-reload timer
Optional x4 or x8 PLL for 4 or 8 MHz internal clock
Five power saving modes: Halt, Active-halt, Wait and Slow, Auto-wakeup from Halt
I/O ports
Up to 15 multifunctional bidirectional I/O lines
7 high sink outputs
4 timers
Configurable watchdog timer
Two 8-bit Lite timers with prescaler
1 real-time base and 1 input capture
One 12-bit auto-reload timer with 4 PWM outputs, input capture and output compare functions
1 communication interface
SPI synchronous serial interface.
Interrupt management
10 interrupt vectors plus TRAP and RESET
15 external interrupt lines (on 4 vectors)
A/D converter
7 input channels
Fixed gain op-amp
13-bit resolution for 0 to 430 mV (@ 5 V VDD)
10-bit resolution for 430 mV to 5 V (@ 5 V VDD)
Instruction set
8-bit data manipulation
63 basic instructions with illegal opcode detection
17 main addressing modes
8 x 8 unsigned multiply instructions
Development tools
Full hardware/software development package
DM (debug module)
