MB91107 View Datasheet(PDF) - Fujitsu

Part Name

Description

Manufacturer

MB91107

32-bit RISC Microcontroller

Fujitsu 

MB91107/108

(Continued)

Pin no.

Pin name

Circuit

type

Function

11

AVSS/ AVRL



Power supply pin (VSS) for A/D converter and reference voltage input pin

(low).

24, 55,

110

VCC



Power supply pin (VCC) for digital circuit.

Always three pins must be connected to the power supply

64

C



Bypass capacitor pin for internal capacitor.

Refer to the HANDLING DEVICES.

34, 52, 75,

101, 119

VSS

 Earth level (VSS) for digital circuit.

Note : In most of the above pins, I/O port and resource I/O are multiplexed e.g. xxx/Pxxx. In case of conflict between

output of I/O port and resource I/O, priority is always given to the output of resource I/O.

s DRAM CONTROL REGISTER

Pin

Data bus 16-bit mode

name 2CAS/1WR mode 1CAS/2WR mode

Data bus 8-bit

mode

RAS0 Area 4 RAS

Area 4 RAS

Area 4 RAS

RAS1 Area 5 RAS

Area 5 RAS

Area 5 RAS

CS0L Area 4 CASL

Area 4 CAS

Area 4 CAS

CS0H Area 4 CASH

Area 4 WEL

Area 4 CAS

CS1L Area 5 CASL

Area 5 CAS

Area 5 CAS

CS1H Area 5 CASH

Area 5 WEL

Area 5 CAS

DW0 Area 4 WE

Area 4 WEL

Area 4 WE

DW1 Area 5 WE

Area 5 WEL

Area 5 WE

Remarks

Correspondence of “L” “H” to lower ad-

dress 1 bit (A0) in data bus 16-bit mode.

“L”: “0”

“H”: “1”

CASL : CAS which A0 corresponds to “0”

area

CASH : CAS which A0 corresponds to “1”

area

WEL : WE which A0 corresponds to “0”

area

WEH : WE which A0 corresponds to “1”

10

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