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7733 Datasheet(PDF) 648 Page - Renesas Technology Corp |
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7733 Datasheet(HTML) 648 Page - Renesas Technology Corp |
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648 / 940 page  In the memory expansion mode, this pin functions as a programmable I/O port. Furthermore, it can be switched to be a clock These signals are affected by the signal output disable selection bit (bit 6 at address 6C CENTRAL PROCESSING UNIT (CPU) 7735 Group User’s Manual 2–8 2.5 Processor modes Table 2.5.1 Relationship between processor modes and functions of P0 to P4 Notes 1: When an internal area is accessed, signals CS0 to CS4 are not output. (The output level is fixed to “H.”) 2: 16 ). (Refer to chapter “12. CONNECTING EXTERNAL DEVICES.” ) 3: Pin P42 can also function as a clock 1 output pin. (Refer to chapter “12. CONNECTING EXTERNAL DEVICES.”) 4: 1 output pin when selected by software. In the microprocessor mode, this pin is affected by the signal output disable selection bit (bit 6 at address 6C16). (Refer to chapter“12. CONNECTING EXTERNAL DEVICES.”) D(even): Data at even address P0 P1 P05 HLDA P32 P33 A8 to A15 P3 P2 P4 A16, A17 P06 and P07 A8 to A15 A0 to A7 A0 to A7 D ALE HLDA P31 P33 (“H” level output) RSMP P RDY P41 E /RDE E RDE (Note 2) P P P P P P00 to P04 CS0 to CS4 (Note 1) P30 WEL (Note 2) P31 WEH (Note 2) P30 WEL (Note 2) P32 ALE HOLD P40 P42 1 (Note 4) (Note 2) D(odd): Data at odd address P43 to P47 Pin name Single-chip mode Memory expansion and Microprocessor modes Processor mode s When external data bus is 16 bits wide (BYTE = “L”) s When external data bus is 8 bits wide (BYTE = “H”) s When external data bus is 16 bits wide (BYTE = “L”) s When external data bus is 8 bits wide (BYTE = “H”) P: Functions as a programmable I/O port. P: Functions as a programmable I/O port. P: Functions as a programmable I/O port. P: Functions as a programmable I/O port. P: Functions as a programmable I/O port (Note 3). P: Functions as a programmable I/O port. s When external data bus is 16 bits wide (BYTE = “L”) s When external data bus is 8 bits wide (BYTE = “H”) D(odd) D(even) D: Data 3: |
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