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M38B71M1 Datasheet(PDF) 91 Page - Renesas Technology Corp |
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M38B71M1 Datasheet(HTML) 91 Page - Renesas Technology Corp |
91 / 110 page ![]() 90 38B7 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER MITSUBISHI MICROCOMPUTERS q Program command Input command code 4016 in the first transfer. Proceed and input the low-order 8 bits and the high-order 8 bits of the address and then program data. Programming is initiated at the last rising edge of the serial clock during program data transfer. The BUSY pin is driven high during program operation. Programming is completed within 10 µs as measured by the internal timer, and the BUSY pin is pulled low. Note : A programming operation is not completed by executing the program command once. Always be sure to execute a pro- gram verify command after executing the program command. When the failure is found in the verification, the user must re- peatedly execute the program command until the pass in the verification. Refer to Figure 90 for the programming flowchart. q Program verify command Input command code C016 in the first transfer. Proceed and drive __ the OE pin low. When this is done, The M38B79FF verify-reads the programmed address’s contents, and then latchs it into the in- __ ternal data latch. When the OE pin is released back high and se- rial clock is input to the SCLK pin, the verify data that has been latched into the data latch is serially output from the SDA pin. Fig. 94 Timings during program verify Fig. 93 Timings during programming SCLK BUSY OE SDA tCH A0 00000010 A7 A8 A15 D0 D7 tCH tCH tPC Command code input (4016) Program address input (L) Program address input (H) Program data input tWP Program SCLK BUSY OE SDA D0 D7 tCRPV Command code input (C016) Verify data output tWR Verify read tRC Note: When outputting the verify data, the SDA pin is switched for output at the first falling edge of SCLK. The SDA pin is placed in the floating state during the period of th(C-E) after the last rising edge of SCLK (at the 8th bit). 00000011 “L” |