UPD78322L-XXX 데이터 시트보기 (PDF) - NEC => Renesas Technology

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UPD78322L-XXX

16/8-BIT SINGLE-CHIP MICROCONTROLLER

NEC => Renesas Technology 

µPD78320, 78322

DIFFERENCES BETWEEN µPD78322 AND 78320

Item

Product Name

Internal ROM

µPD78322

16K bytes

µPD78320

None

I/O line

Input

Input

/output

16 (dual-function as analog input: 8)

39

21

Port 4

(P40 to P47)

Specifiable as I/O as an 8-bit unit.

Functions as multiplexed address/data buses

(AD0 to AD7) in the external memory expansion

mode.

Functions always as multiplexed address/data

buses.

Port 5

(P50 to P57)

Specifiable as I/O bit-wise.

Functions as address bus (A8 to A15) in the

external memory expansion mode.

Functions always as address bus.

Port 9

(P90 to P93)

Specifiable as I/O bit-wise.

In the external memory expansion mode, P90

and P91 function as RD strobe signal output and

WR strobe signal output, respectively. In the

external memory high-speed fetch mode, P92

and P93 function as TAS output and TMD

output, respectively.

Memory expansion

mode register (MM)

Port 4 I/O mode is set as an 8-bit unit .

Port 5 mode register

Port 5 I/O mode is set bit-wise.

(PM5)

Always P90 and P91 function as RD strobe and

WR strobe signal output, respectively.

In the µPD78322 emulation mode, turbo

access manager (µPD71P301)Note PA and PB pins

are controlled as port 4 and port 5 emulation

pins.

Note Maintenance product

8

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