Zilog eZ80F92 Manual de usuario descargar pdf (Pagina 26)

eZ80F92 Development Kit

User Manual

eZ80Acclaim!

Development Platform UM013911-0607

mounted on the eZ80Acclaim!

Development Platform, because the

eZ80F92 Flash Module features the eZ80F92 microcontroller. To mount

an application module, use the two male headers J6 and J8.

Jumper J6 carries the General Purpose Input/Output ports (GPIO), and

jumper J8 carries memory and control signals. To design an application

module, the user should be familiar with the architecture and features of

the eZ80F92 Flash Module currently installed. Tables 4 and 5 list the sig-

nals and functions related to each of these jumpers by pin. Power and

ground signals are omitted for the sake of simplicity.

Table 4. GPIO Connector J6*

Signal Pin # Function Direction Notes

SCL 5 I

C Clock Bidirectional

SDA 7 I

C Data Bidirectional

MOD_DIS 9 Modem Disable Input If a shunt is installed between

pins 6 and 9, the modem

function on the eZ80Acclaim!

Development Platform is

disabled.

MWAIT 13 Wait signal for the

CPU

Input

EM_D0 15 Emulated Port A,

Bit 0

Bidirectional

CS3 17 Chip Select 3 of

the CPU

Output This signal is also present on

the J8.

EM_D[7:1] 21,23,25,

27,29,31,

Emulated Port A,

Bit [7:1]

Bidirectional

Reserved 35

Note: *All of the signals are driven directly by the CPU.

1 2 ... 21 22 23 24 25 26 27 28 29 30 31 ... 86 87

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Zilog eZ80F92 Manual de usuario Pagina 26