UPD70325中文资料瑞萨数据手册PDF规格书

FEATURES

• Software compatible with V25

• Software compatible with mPD70108/70116 (in native mode) (some instructions added)

• Internal 16-bit architecture and external 8-bit data bus

• 3-stage pipeline method

• Minimum instruction cycle : 250 ns/8 MHz (external 16 MHz)

: 200 ns/10 MHz (external 20 MHz)

• Memory space 1 Mbyte

• On-chip RAM : 256 words ´ 8 bits

• Register bank (memory mapped method) : 8 banks

• Input port (port T) with comparator : 8 bits

• I/O lines (input port : 4 bits, input/output ports : 20 bits)

• Serial interface : 2 channels

• Internal dedicated baud rate generator

• Asynchronous mode and I/O interface mode

• Interrupt controller

• Programmable priority (8 levels)

• 3 types of interrupt response method

Vectored interrupt function, register bank switching function, macro service function

• DRAM and pseudo SRAM refreshing function

• DMA controller : 2 channels

• 4 types of DMA transfer mode

• Transfer rate Maximum 4 Mbytes/second (when stop control is not executed by DMARQ pin in demand release mode)

Maximum 2 Mbytes/second (when stop control is executed by DMARQ pin in demand release

mode, or burst mode)

• Address pointer (linear) : 20 bits

• Terminal counter : 16 bits

• 16-bit timer : 2 channels

• Time base counter (20 bits) : 1 channel

• On-chip clock generator

• Programmable wait function

• Standby function (STOP, HALT)