TMS370 datasheet(41/73 Pages) TI

41 / 73 page

TMS370Cx6x

8-BIT MICROCONTROLLER

SPNS033C – SEPTEMBER 1995 – REVISED FEBRUARY 1997

POST OFFICE BOX 1443

• HOUSTON, TEXAS 77251–1443

serial communications interface 1 (SCI1) module (continued)

RXCTL.4 – 2

FE OE PE

RX ERROR

SCICTL.3

TXWAKE

SCICCR.6 SCICCR.5

EVEN / ODD ENABLE

PARITY

Frame Format and Mode

WUT

TXBUF.7 – 0

Transmit Data

Buffer Reg.

TXSHF Reg.

TXCTL.7

TXCTL.6

TXRDY

TX EMPTY

SCI TX Interrupt

TXCTL.0

TXENA

SCICTL.4

BAUD MSB. 7 – 0

Baud Rate

MSbyte Reg.

BAUD LSB. 7 – 0

Baud Rate

LSbyte Reg.

CLOCK

SCICTL.1

SCITXD

SCI TX INT ENA

RXCTL.7

ERR

RXSHF Reg.

RXCTL.1

Receive Data

Buffer Reg.

RXBUF.7 – 0

RXENA

RXCTL.6

RXCTL.5

RXRDY

BRKDT

SCI RX Interrupt

RXCTL.0

SCI RX INT ENA

SCIPRI.6

SCIPRI.5

Level 1 INT

Level 2 INT

Level 1 INT

Level 2 INT

SCITX PRIORITY

SCIRX PRIORITY

SCITXD

SCIPC2.7 – 4

SCICLK

SCIPC1.3 – 0

SCIRXD

SCIPC2.3 – 0

SCICTL.0

RXWAKE

SYSCLK

Figure 15. SCI1 Block Diagram

analog-to-digital converter 1 (ADC1) module

The analog-to-digital (ADC1) converter module is an 8-bit, successive approximation converter with internal

sample-and-hold circuitry. The module has eight multiplexed analog input channels that allow the processor to

convert the voltage levels from up to eight different sources. The ADC1 module features include the following:

D Minimum conversion time: 32.8 µs at 5-MHz SYSCLK

D Ten external pins:

–

Eight analog input channels (AN0–AN7), any of which can be software configured as digital inputs

(E0 – E7) if not needed as analog channels

–

AN1 – AN7 also can be configured as positive-input voltage reference.

–VCC3: ADC1 module high-voltage reference input

–VSS3: ADC1 module low-voltage reference input

TMS370 Datasheet(PDF) 41 Page - Texas Instruments

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