UPD70433 Description
The µPD70433 (V55PI) is a microprocessor in which a 16-bit CPU, RAM, serial interface, parallel interface, A/D converter, timers, DMA controller, interrupt controller, etc., are integrated in a single chip. The V55PI is software-patible with the µPD70320 and 70330 (V25TM and V35TM) single-chip microcontrollers. The V55PI provides a migration path from the V25.
UPD70433 Key Features
- Internal 16-bit architecture, selectable external data bus width (16/8 bits)
- Software patible with V20TM and V30TM (native mode) and V25 and V35 (includes additional instructions)
- Minimum instruction cycle: 160 ns/12.5 MHz (external 25 MHz) 125 ns/16 MHz (external 32 MHz)
- Address space: 16M bytes: 1-Mbyte basic memory space 16-Mbyte extended memory space
- Register file space (in on-chip RAM) : 512 bytes/16 register banks
- I/O space : 64K bytes
- Automatic wait control with memory space divided in variable sizes (max. 6 blocks)
- I/O line (input ports: 11 bits, input/output ports: 42 bits)
- DMA controller (DMAC): Max. 4-channel configuration possible
- Four DMA transfer modes (single transfer, demand release, single step, burst)