MB91155 datasheet(2/105 Pages) FUJITSU

2 / 105 page

MB91F155A/MB91155/MB91154

Bus Interface

• 16-bit address output, 8/16-bit data input and output

• Basic bus cycle : 2-clock cycle

• Support for interface for various types of memory

• Unused data/address pins can be configured us input/output ports

• Support for little endian mode

Internal ROM

MB91F155A

FLASH products : 510 Kbytes

MB91155

Mask product : 510 Kbytes

MB91154

Mask product : 384 Kbytes

Internal RAM

Mask, FLASH products : 2 Kbytes

Internal Data RAM

MB91F155, MB91155

FLASH, Mask products : 32 Kbytes

MB91154

FLASH, Mask product : 20 Kbytes

DMAC

DMAC in descriptor format for placing transfer parameters on to the main memory.

Capable of transferring a maximum of eight internal and external factors combined.

Three channels for external factors

Bit Search Module

Searches in one cycle for the position of the bit that changes from the MSB in one word to the initial I/O.

Timers

• 16-bit OCU

× 8 channels, ICU × 4 channels, Free-run timer × 1 channel

• 8/16-bit up/down timer/counter (8-bit

× 2 channels or 16-bit × 1 channel)

• 16-bit PPG timer

× 6 channels. The output pulse cycle and duty can be varied as desired

• 16-bit reload timer

× 4 channels

D/A Converter

•8-bit

× 3 channels

10. A/D Converter (Sequential Comparison Type)

•10-bit

× 8 channels

• Sequential conversion method (conversion time : 5.0

µs@33 MHz)

• Single conversion or scan conversion can be selected, and one-shot or continuous or stop conversion mode

can be set respectively.

• Conversion starting function by hardware/software.

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