MB91F155 Datasheet, PDF (2/104 Pages) Fujitsu Component Limited. – 32-bit Proprietary Microcontrollers

MB91F155/MB91154
2. 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
3. Internal ROM
MB91F155
FLASH products : 510 Kbytes
MB91154
Mask product : 384 Kbytes
4. Internal RAM
Mask, FLASH products : 2 Kbytes
5. Internal Backup RAM
MB91F155
FLASH products : 32 Kbytes
MB91154
Mask product : 20 Kbytes
More power can be saved by entering backup mode and then applying power supply current only to the backup
RAM.
6. 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
7. 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.
8. 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)
AIN and BIN share pins with internal interrupts.
• 16-bit PPG timer × 6 channels. The output pulse cycle and duty can be varied as desired
• 16-bit reload timer × 4 channels
9. 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.
(Continued)
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