ST7232AK2-Auto STMicroelectronics, ST7232AK2-Auto Datasheet - Page 29

• Manufacturer Part Number: ST7232AK2-Auto
• Description: 8-bit MCU for automotive, 16 Kbyte Flash, 10-bit ADC, 4 timers, SPI, SCI
• Manufacturer: STMicroelectronics

Specifications of ST7232AK2-Auto

• Hdflash Endurance: 100 cycles, data retention
• Clock Sources: crystal/ceramic resonator oscillators and bypass for external clock
• Four Power Saving Modes: halt, active halt, wait and slow
• Main Clock Controller With: real time base, beep and clock-out capabilities
• Two 16-bit Timers With: 2 input captures, 2 output compares, PWM and pulse generator modes

ST7232Axx-Auto
Caution:
4.5
Figure 6.
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
External clock ICC entry mode is mandatory. Pin 9 must be connected to the OSC1 or
OSCIN pin of the ST7 and OSC2 must be grounded.
In-circuit programming (ICP)
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.
power supply
Application
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.
Typical ICC interface
(3)
C
L2
Programming tool
(See ‘caution’)
C
ST7
L1
Figure
10kΩ
10
9
6). For more details on the pin locations, refer
ICC connector
7
8
5
6
ICC cable
4
3
1
2
HE10 connector type
ICC connector
Flash program memory
Application reset source
Application I/O
Application board
(1)
(2)
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