PSD814G3-C-90B81I 查看數據表（PDF） - STMicroelectronics

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PSD814G3-C-90B81I

Configurable Memory System on a Chip for 8-Bit Microcontrollers

STMicroelectronics 

PSD835G2

The

PSD835G2

Functional

Blocks

(cont.)

PSD8XX Family

9.4.5 Ports A, B and C – Functionality and Structure

Ports A and B have similar functionality and structure, as shown in Figure 26. The two

ports can be configured to perform one or more of the following functions:

t MCU I/O Mode

t CPLD Output – Micro⇔Cells McellA[7:0] can be connected to Port A.

McellB[7:0] can be connected to Port B.

External chip select ECS [7:0] can be connected to Port C.

t CPLD Input – Via the input Micro⇔Cells.

t Address In – Additional high address inputs using the Input Micro⇔Cells.

t Open Drain/Slew Rate – pins PC[7:0]can be configured to fast slew rate,

pins PA[7:0] and PB[7:0] can be configured to Open Drain

Mode.

Figure 26. Port A, B and C

61

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