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STMicroelectronics Electronic Components Datasheet

ST7260E2 Datasheet

Low speed USB 8-bit MCU

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ST7260xx
Low speed USB 8-bit MCU family with up to 8K Flash
and serial communications interface
Features
Memories
– 4 or 8 Kbytes program memory: high
density Flash (HDFlash), or FastROM with
readout and write protection
– In-application programming (IAP) and in-
circuit programming (ICP)
– 384 bytes RAM memory (128-byte stack)
Clock, reset and supply management
– Run, Wait, Slow and Halt CPU modes
– 12 or 24 MHz oscillator
– RAM Retention mode
– Optional low voltage detector (LVD)
USB (Universal Serial Bus) interface
– DMA for low speed applications compliant
with USB 1.5 Mbs (version 2.0) and HID
specifications (version 1.0)
– Integrated 3.3 V voltage regulator and
transceivers
– Supports USB DFU class specification
– Suspend and Resume operations
– 3 Endpoints with programmable In/Out
configuration
Up to 19 I/O ports
– Up to 8 high sink I/Os (10 mA at 1.3 V)
Table 1. Device summary
SO24
QFN40
(6x6)
– 2 very high sink true open drain I/Os (25
mA at 1.5 V)
– Up to 8 lines with interrupt capability
2 timers
– Programmable Watchdog
– 16-bit Timer with 2 Input Captures, 2
Output Compares, PWM output and clock
input
Communications interface
– Asynchronous serial communications
interface (SCI)
Instruction set
– 63 basic instructions
– 17 main addressing modes
– 8 x 8 unsigned multiply instruction
Development tools
– Versatile development tools including ,
software library, hardware emulator,
programming boards, HID and DFU
software layer
Features
ST7260K2
ST7260K1
ST7260E2
ST7260E1
Flash program memory -
bytes
RAM (stack) - bytes
Peripherals
Operating supply
CPU frequency
Operating temperature
Packages
8K 4K 8K 4K
384 (128)
Watchdog timer, 16-bit timer, USB, SCI
4.0 V to 5.5 V
8 MHz (with 24 MHz oscillator) or 4 MHz (with 12 MHz oscillator)
0 °C to +70 °C
QFN40 (6x6)
SO24
February 2009
Rev 3
1/139
www.st.com
139


STMicroelectronics Electronic Components Datasheet

ST7260E2 Datasheet

Low speed USB 8-bit MCU

No Preview Available !

Contents
Contents
ST7260xx
1
2
3
4
5
6
7
2/139
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Register & memory map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Flash program memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.2 Main features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.3 Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.3.1 Readout protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.4 ICC interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.5 ICP (in-circuit programming) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.6 IAP (in-application programming) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.7 Related documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.7.1 Flash control/status register (FCSR) . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Central processing unit (CPU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.2 Main features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.3 CPU registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.3.1 Accumulator (A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.3.2 Index registers (X and Y) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.3.3 Program counter (PC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.3.4 Condition code register (CC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.3.5 Stack pointer register (SP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Reset and clock management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.1 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.2 Low voltage detector (LVD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.2.1 Watchdog reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.2.2 External reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25


Part Number ST7260E2
Description Low speed USB 8-bit MCU
Maker STMicroelectronics
Total Page 30 Pages
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