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7477 Datasheet(PDF) 193 Page - Renesas Technology Corp |
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7477 Datasheet(HTML) 193 Page - Renesas Technology Corp |
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193 / 354 page ![]() 7470/7471/7477/7478 GROUP USER’S MANUAL 1-176 HARDWARE 1.19 Built-in PROM version 1.19.1 EPROM mode The built-in PROM version has the EPROM mode in addition to the same operation modes as those of the mask ROM version. The EPROM mode permits writing to the built-in PROM and reading from the built- in PROM. To the built-in PROM, writing, reading and erasing can be performed by the same operations as those of the M5M27C256K. Table 1.19.2 shows a pin function in EPROM mode and Figure 1.19.1 to 1.19.6 show a connections in EPROM mode. Table 1.19.2 Pin functions in EPROM mode Built-in PROM version VCC P33 VSS P11 to P17, P20 to P23, P30, P31, P40, P41 P00 to P07 VREF P32 M5M27C256K VCC VPP VSS A0 to A14 D0 to D7 _____ CE _____ OE Pin name Fig. 1.19.1 Pin connection in EPROM mode of 7470 group 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 P07 P06 P05 P04 P03 P02 P01 P00 P41 P40 P33/CNTR1 P32/CNTR0 P31/INT1 P30/INT0 VCC P16/CLK P15/SOUT P14/SIN P13/T1 P12/T0 P11 P10 P23/IN3 P22/IN2 P21/IN1 P20/IN0 VREF XIN XOUT VSS P17/SRDY RESET Outline 32P4B A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 VSS CE D7 D6 D5 D4 D3 D2 D1 D0 A14 A13 VPP A12 A11 VCC OE VSS : Same functions as M5M27C256K (TOP VIEW) |
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