UPSD3212C-40U6 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

UPSD3212C-40U6

Flash programmable system devices with 8032 MCU and USB and programmable logic

STMicroelectronics 

uPSD3212A, uPSD3212C, uPSD3212CV

Port C – Functionality and Structure

Port C can be configured to perform one or more

of the following functions (see Figure 62):

■ MCU I/O Mode

■ CPLD Output – McellBC7-McellBC0 outputs

can be connected to Port B or Port C.

■ CPLD Input – via the Input Macrocells (IMC)

■ In-System Programming (ISP) – JTAG pins

(TMS, TCK, TDI, TDO) are dedicated pins for

device programming. (See PROGRAMMING

IN-CIRCUIT USING THE JTAG SERIAL

INTERFACE, page 127, for more information

on JTAG programming.)

■ Open Drain – Port C pins can be configured in

Open Drain Mode

■ Battery Backup features – PC2 can be

configured for a battery input supply, Voltage

Standby (VSTBY).

PC4 can be configured as a Battery-on

Indicator (VBATON), indicating when VCC is

less than VBAT.

Port C does not support Address Out Mode, and

therefore no Control Register is required.

Figure 62. Port C Structure

DATA OUT

REG.

DQ

WR

MCELLBC[ 7:0]

READ MUX

P

D

B

DIR REG.

DQ

WR

ENABLE PRODUCT TERM (.OE)

CPLD -INPUT

DATA OUT

1

SPECIAL FUNCTION

OUTPUT

MUX

DATA IN

OUTPUT

SELECT

ENABLE OUT

INPUT

MACROCELL

1

SPECIAL FUNCTION

PORT C PIN

CONFIGURATION

BIT

AI06618

Note: 1. ISP or battery back-up

119/163

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