TMS77C82 datasheet(46/49 Pages) TI

46 / 49 page

TMS370Cx0x

8-BIT MICROCONTROLLER

SPNS029C – SEPTEMBER 1995 – REVISED FEBRUARY 1997

POST OFFICE BOX 1443

• HOUSTON, TEXAS 77251–1443

SCI1 isosynchronous mode timing characteristics and requirements for external clock

(see Note 12 and Figure 24)

NO.

MIN

MAX

UNIT

tc(SCC)

Cycle time, SCICLK

10tc

tw(SCCL)

Pulse duration, SCICLK low

4.25tc + 120

tw(SCCH)

Pulse duration, SCICLK high

tc + 120

td(SCCL-TXDV)

Delay time, SCITXD valid after SCICLK low

4.25tc + 145

tv(SCCH-TXD)

Valid time, SCITXD data valid after SCICLK high

tw(SCCH)

tsu(RXD-SCCH)

Setup time, SCIRXD to SCICLK high

tv(SCCH-RXD)

Valid time, SCIRXD data after SCICLK high

2tc

NOTE 12: tc = system-clock cycle time = 1 / SYSCLK

SCIRXD

SCITXD

SCICLK

Data Valid

Figure 24. SCI1 Isosynchronous Timing for External Clock

Table 18 is designed to aid the user in referencing a device part number to a mechanical drawing. The table

shows a cross-reference of the device part number to the TMS370 generic package name and the associated

mechanical drawing by drawing number and name.

Table 18. TMS370Cx0x Family Package Type and Mechanical Cross-Reference

PKG TYPE

(mil pin spacing)

TMS370 GENERIC NAME

PKG TYPE NO. AND

MECHANICAL NAME

DEVICE PART NUMBERS

FN – 28 pin

(50-mil pin spacing)

PLASTIC LEADED CHIP CARRIER

(PLCC)

FN(S-PQCC-J**) PLASTIC J-LEADED

CHIP CARRIER

TMS370C002AFNA

TMS370C002AFNL

TMS370C002AFNT

TMS370C302AFNA

TMS370C302AFNL

TMS370C302AFNT

TMS370C702FNT

FZ – 28 pin

(50-mil pin spacing)

CERAMIC LEADED CHIP CARRIER

(CLCC)

FZ(S-CQCC-J**) J-LEADED CERAMIC

CHIP CARRIER

SE370C702FZT

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