MSC1210 datasheet(43/83 Pages) TI

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MSC1210

SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004

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Memory Write Select (MWS)

Reset Value

SFR 8Fh

MXWS

00h

MXWS

MOVX Write Select. This allows writing to the internal Flash program memory.

bit 0

0: No writes are allowed to the internal Flash program memory.

1: Writing is allowed to the internal Flash program memory, unless PML (HCR0) or RSL (HCR0) are on.

Port 1 (P1)

Reset Value

SFR 90h

P1.7

INT5/SCK

P1.6

INT4/MISO

P1.5

INT3/MOSI

P1.4

INT2/SS

P1.3

TXD1

P1.2

RXD1

P1.1

T2EX

P1.0

FFh

P1.7−0

General-Purpose I/O Port 1. This register functions as a general-purpose I/O port. In addition, all the pins have an

bits 7−0

alternative function listed below. Each of the functions is controlled by several other SFRs. The associated Port 1

latch bit must contain a logic ‘1’ before the pin can be used in its alternate function capacity. To use the alternate

function, set the appropriate mode in P1DDRL (SFR AEh), P1DDRH (SFR AFh).

INT5/SCK

External Interrupt 5. A falling edge on this pin will cause an external interrupt 5 if enabled.

bit 7

SPI Clock. The master clock for SPI data transfers.

INT4/MISO

External Interrupt 4. A rising edge on this pin will cause an external interrupt 4 if enabled.

bit 6

Master In Slave Out. For SPI data transfers, this pin receives data for the master and transmits data from the slave.

INT3/MOSI

External Interrupt 3. A falling edge on this pin will cause an external interrupt 3 if enabled.

bit 5

Master Out Slave In. For SPI data transfers, this pin transmits master data and receives slave data.

INT2/SS

External Interrupt 2. A rising edge on this pin will cause an external interrupt 2 if enabled.

bit 4

Slave Select. During SPI operation, this pin provides the select signal for the slave device but does not control the

output drive of MISO.

TXD1

Serial Port 1 Transmit. This pin transmits the serial Port 1 data in serial port modes 1, 2, 3, and emits the synchro-

bit 3

nizing clock in serial port mode 0.

RXD1

Serial Port 1 Receive. This pin receives the serial Port 1 data in serial port modes 1, 2, 3, and is a bidirectional data

bit 2

transfer pin in serial port mode 0.

T2EX

Timer 2 Capture/Reload Trigger. A 1 to 0 transition on this pin will cause the value in the T2 registers to be

bit 1

transferred into the capture registers, if enabled by EXEN2 (T2CON.3, SFR C8h). When in auto-reload mode, a 1

to 0 transition on this pin will reload the Timer 2 registers with the value in RCAP2L and RCAP2H if enabled by EXEN2

(T2CON.3, SFR C8h).

Timer 2 External Input. A 1 to 0 transition on this pin will cause Timer 2 to increment.

bit 0

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