ST7263BE2 STMicroelectronics, ST7263BE2 Datasheet - Page 26

• Manufacturer Part Number: ST7263BE2
• Description: LOW SPEED USB 8-BIT MCU FAMILY WITH UP TO 32K FLASH/ROM, DFU CAPABILITY, 8-BIT ADC, WDG, TIMER, SCI and I2C
• Manufacturer: STMicroelectronics

Specifications of ST7263BE2

• 4, 8, 16 Or 32 Kbytes Program Memory: high density Flash (HDFlash), FastROM or ROM with Read-Out and Write protection

Flash program memory
4.5
26/186
Figure 9.
1. If the ICCCLK or ICCDATA pins are only used as outputs in the application, no signal isolation is
2. During the ICC session, the programming tool must control the RESET pin. This can lead to conflicts
3. The use of Pin 7 of the ICC connector depends on the Programming Tool architecture. This pin must be
4. Pin 9 has to be connected to the OSC1 or OSCIN pin of the ST7 when the clock is not available in the
ICP (in-circuit programming)
To perform ICP the microcontroller must be switched to ICC (in-circuit communication) mode
by an external controller or programming tool.
Depending on the ICP code downloaded in RAM, Flash memory programming can be fully
customized (number of bytes to program, program locations, or selection serial
communication interface for downloading).
When using an STMicroelectronics or third-party programming tool that supports ICP and
the specific microcontroller device, the user needs only to implement the ICP hardware
interface on the application board (see
to the device pinout description.
necessary. As soon as the Programming Tool is plugged to the board, even if an ICC session is not in
progress, the ICCCLK and ICCDATA pins are not available for the application. If they are used as inputs by
the application, isolation such as a serial resistor has to implemented in case another device forces the
signal. Refer to the Programming Tool documentation for recommended resistor values.
between the programming tool and the application reset circuit if it drives more than 5mA at high level
(push pull output or pull-up resistor<1K). A schottky diode can be used to isolate the application RESET
circuit in this case. When using a classical RC network with R > 1K or a reset management IC with open
drain output and pull-up resistor > 1K, no additional components are needed. In all cases the user must
ensure that no external reset is generated by the application during the ICC session.
connected when using most ST Programming Tools (it is used to monitor the application power supply).
Please refer to the Programming Tool manual.
application or if the selected clock option is not programmed in the option byte. ST7 devices with multi-
oscillator capability need to have OSC2 grounded in this case.
APPLICATION
POWER SUPPLY
Typical ICC interface
(See Note 3)
PROGRAMMING TOOL
C L2
Doc ID 7516 Rev 8
OPTIONAL
(See Note 4)
C L1
ST7
Figure
10k
10
ICC CONNECTOR
9
Ω
9). For more details on the pin locations, refer
7
8
5
6
ICC Cable
4
3
1
2
HE10 CONNECTOR TYPE
ICC CONNECTOR
APPLICATION BOARD
APPLICATION
See Note 2
APPLICATION
RESET SOURCE
See Note 1
I/O
ST7263Bxx