Renesas M-Station, Руководство пользователя

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M-Station Baseboard
4.7 LCD Socket
An optional pin socket can be mounted on row 8[23:31] and row 12, where an LCD module can be
inserted. The segment drive signals for the microcontroller CPU are connected to row 8[23:31] and
row 12. These pins are open for the CPUs, which do not support LCD segment drive.
Figure 12. Four-Digit, Seven Segment LCD Module
4.8 Optional Expansion Memory
Optional footprints for 64 KB external expansion SRAM and its address latch are provided. The
address, data, and read/write control signals are connected to row 3 and are normally connected to
address, data and control lines through solder blobs.
Table 1
ional Expansion Memory Signals on ROW3
0.
Opt
Description Name Row Connection
Address and data AD[0:7] ROW3[16:24] Through SB[17:10]
Address A[8:15] ROW3[25:32] Through SB[9:2]
Address latch ADDR_LD ROW3[16] Through SB[18]
Read SRAM_RDB ROW3[13] Through SB[21]
Write SRAM_WRB ROW3[14] Through SB[20]
Row 3 is free for other use if the optional memory and its address latch are not mounted. If, however,
the optional memory is mounted, the selected row 3 is dedicated for the external expansion memory.
To disconnect row 3 from external expansion memory after the memory is mounted, remove the 0
Ω
resistors mounted on the solder blobs instead of removing memory.
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