CHAPTER 1 OUTLINE32 User’s Manual U11302EJ4V0UM1.8 Overview of FunctionsROM Mask ROM One-timePROM32 KBNote 1 40 KBNote 1 48 KB 60 KB 60 KBNote 2High-speed RAM 1024 bytesExpansion RAM – 1024 bytes 1024 bytesNote 3Buffer RAM 64 bytesVFD display RAM 80 bytesGeneral-purpose registers 8 bits x 8 x 4 banksWith main system 0.4μs/0.8μs/1.6μs/3.2μs/6.4μs (when operated at 5.0 MHz)clock selectedWith subsystem 122μs (when operated at 32.768 kHz)clock selected• 16-bit operation• Multiply/divide (8 bits x 8 bits, 16 bits ÷ 8 bits)• Bit manipulation (set, reset, test, and Boolean operation)• BCD adjust, and other related operationsI/O ports (including VFD pins) Total: 74 pins• CMOS input: 2 pins• CMOS I/O: 27 pins• N-ch open-drain I/O: 5 pins• P-ch open-drain I/O: 24 pins• P-ch open-drain output: 16 pinsVFD controller/driver Total of display output: 53 pins• Segments: 9 to 40 pins• Digits: 2 to 16 pinsA/D converter • 8-bit resolution x 8 channels• Power supply voltage: AV DD = 4.0 to 5.5 VSerial interface • 3-wire serial I/O/SBI/2-wire serial I/O mode selectionpossible: 1 channel• 3-wire serial I/O mode (maximum 64-byte on-chip automatictransmit/receive function): 1 channelNotes 1. The initial value of the internal memory size switching register (IMS) in theμPD780204A and 780205Ais fixed to CFH (60 KB), regardless of the internal memory capacity. Therefore, set the values shownbelow for each product before use.μPD780204A: C8H (32 KB)μPD780205A: CAH (40 KB)2. 32, 40, 48, or 60 KB can be selected by the internal memory size switching register (IMS).3. 0 or 1024 bytes can be selected by the internal expansion RAM size switching register (IXS).ItemPart NumberInternalmemoryInstruction setMinimuminstructionexecutiontimeμPD780204μPD780204AμPD780205μPD780205AμPD780206μPD780208μPD78P0208
