ST7232A View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST7232A

8-BIT MICROCONTROLLER WITH 8K FLASH/ROM, ADC, 4 TIMERS, SPI, SCI INTERFACE

STMicroelectronics 

ST7232A

Notes:

1. In the interrupt input column, “eiX” defines the associated external interrupt vector. If the weak pull-up

column (wpu) is merged with the interrupt column (int), then the I/O configuration is pull-up interrupt input,

else the configuration is floating interrupt input.

2. In the open drain output column, “T” defines a true open drain I/O (P-Buffer and protection diode to VDD

are not implemented). See See “I/O PORTS” on page 42. and Section 12.8 I/O PORT PIN CHARACTER-

ISTICS for more details.

3. OSC1 and OSC2 pins connect a crystal/ceramic resonator, or an external source to the on-chip oscil-

lator; see Section 1 INTRODUCTION and Section 12.5 CLOCK AND TIMING CHARACTERISTICS for

more details.

4. On the chip, each I/O port has 8 pads. Pads that are not bonded to external pins are in input pull-up con-

figuration after reset. The configuration of these pads must be kept at reset state to avoid added current

consumption.

5. For details refer to Section 12.8.1 on page 128

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