ST72344XX Datasheet, PDF (1/247 Pages) STMicroelectronics – SCI asynchronous serial interface

ST72344xx, ST72345xx
8-bit MCU with up to 16 Kbytes Flash memory, 10-bit ADC,
two 16-bit timers, two I2C, SPI, SCI
Datasheet −production data
Features
■ Memories
– up to 16 Kbytes Program memory: single
voltage extended Flash (XFlash) with read-
out and write protection, in-circuit and in-
application programming (ICP and IAP).
10,000 write/erase cycles guaranteed, data
retention: 20 years at 55 °C.
– up to 1 Kbyte RAM
– 256 bytes data EEPROM with readout
protection. 300,000 write/erase cycles
guaranteed, data retention: 20 years at
55 °C.
■ Clock, reset and supply management
– Power on / power off safe reset with
3 programmable threshold levels (LVD)
– Auxiliary voltage detector (AVD)
– Clock sources: crystal/ceramic resonator
oscillators, high-accuracy internal RC
oscillator or external clock
– PLL for 4x or 8x frequency multiplication
– 5 power-saving modes: Slow, Wait, Halt,
Auto-wakeup from Halt and Active-halt
– Clock output capability (f_CPU)
■ Interrupt management
– Nested interrupt controller
– 10 interrupt vectors plus TRAP and RESET
– 9 external interrupt lines on 4 vectors
■ Up to 34 I/O ports
– up to 34 multifunctional bidirectional I/O
lines
– up to 12 high sink outputs (10 on 32-pin
devices)
■ 4 timers
– Configurable window watchdog timer
– Real-time base
– 16-bit timer A with: 1 input capture, 1 output
compare, external clock input, PWM and
pulse generator modes
LQFP48
7 x 7 mm
LQFP32
7 × 7 mm
LQFP44
10 × 10 mm
– 16-bit timer B with: 2 input captures, 2
output compares, PWM and pulse
generator modes
■ 3 communication interfaces
– I²C multimaster / slave
– I²C slave 3 addresses, no stretch, with
DMA access and byte pair coherency on
I²C read
– SCI asynchronous serial interface (LIN
compatible)
– SPI synchronous serial interface
■ 1 analog peripheral
– 10-bit ADC with 12 input channels (8 on 32-
pin devices)
■ Instruction set
– 8-bit data manipulation
– 63 basic instructions with illegal opcode
detection
– 17 main addressing modes
– 8 x 8 unsigned multiply instruction
■ Development tools
– Full hardware/software development
package
– On-chip debug module
Table 1. Device summary
References
Part numbers
ST72344xx
ST72344K2, ST72344K4,
ST72344S2, ST72344S4
ST72345xx
ST72345C4
July 2012
This is information on a product in full production.
Doc ID 12321 Rev 6
1/247
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