MB91F464HB datasheet(39/105 Pages) CYPRESS

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Document Number: 002-04621 Rev. *A

Page 39 of 105

MB91460H Series

9.4.2 Pin connections in parallel programming mode

Resetting after setting the MD[2:0] pins to [111] will halt CPU functioning. At this time, the Flash memory's interface circuit enables

direct control of the Flash memory unit from external pins by directly linking some of the signals to GP-Ports. Please see table below

for signal mapping.

In this mode, the Flash memory appears to the external pins as a stand-alone unit. This mode is generally set when writing/erasing

using the parallel Flash programmer. In this mode, all operations of the 8.5 Mbits Flash memory's Auto Algorithms are available.

Correspondence between MBM29LV400TC and Flash Memory Control Signals

9.5 Poweron Sequence in parallel programming mode

The flash memory can be accessed in programming mode after a certain wait time, which is needed for Security Vector fetch:

• Minimum wait time after VDD5/VDD5R power on:

2.76 ms

• Minimum wait time after INITX rising:

1.0 ms

MBM29LV400TC

External pins

FR-CPU mode

MB91F464HB

external pins

Comment

Flash memory

mode

Normal function

Pin number

INITX

RESET

FRSTX

GP16_6

MD2

Set to ‘1’

MD1

Set to ‘1’

MD0

Set to ‘1’

RY/BY

FMCS:RDY bit

RY/BYX

GP18_2

100

BYTE

Internally fixed to ‘H’

BYTEX

GP16_4

Internal control signal +

control via interface

circuit

WEX

GP16_7

OEX

GP07_7

CEX

GP07_6

ATDIN

GP18_6

103

Set to ‘0’

EQIN

GP18_5

102

Set to ‘0’

TESTX

GP16_5

Set to ‘1’

RDYI

GP18_4

101

Set to ‘0’

A-1

Internal address bus

FA0

GP05_5

Set to ‘0’

A0 to A3

FA1 to FA4

GP19_0 to GP19_2,

GP19_4

92 to 95

A4 to A7

FA5 to FA8

GP19_5 to GP19_6,

GP18_0 to GP18_1

96 to 99

A8 to A11

FA9 to FA12

GP06_0 to GP06_3

4 to 7

A12 to A15

FA13 to FA16

GP06_4 to GP06_7

8 to 11

A16 to A18

FA17 to FA19

GP05_0 to GP05_2

12 to 14

A19

FA20

GP05_3

Set to ‘1’

DQ0 to DQ7

Internal data bus

DQ0 to DQ7

GP00_0 to GP00_7

28 to 35

DQ8 to DQ15

GP01_0 to GP01_7

20 to 27

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