VI SDRAM CONTROLLER BLOCK: SDRAM INTERFACE
B-VI-2-4
EPSON
S1C33L03 FUNCTION PART
Notes:
• Because the SDRAM address bus pins differ in bit numbers from ordinary external address pin
names, care must be taken when connecting an SDRAM to the S1C33. (SDRAM address
SDA0 is output from the A1 pin, and SDA12 is output from the A13 pin.) Furthermore, the
SDA10 signal with a special function is assigned to the P33 pin, and not to the address bus
A11.
• If designated pins (e.g., CKE and DQM[1:0] pins) must be driven high before the SDRAM can
be powered on, add external pull-up resistors or use a separate power supply for the SDRAM.
• To prevent a malfunction, take measures against noise when designing the board patterns for
the SDRAM.
Table 2.2 lists several examples of SDRAM chip configurations. All of these examples use only one area of the
S1C33. If your design uses two areas, the same type of memory needs to be used in each area because SDRAM-
related settings are common to both areas.
Table 2.2 Chip Configuration Example (when one area only is used)
SDRAM
Number of
devices
Memory size
256M (4M x 16 bits x 4 banks)
1
32M bytes
256M (8M x 8 bits x 4 banks)
1
32M bytes
128M (2M x 16 bits x 4 banks)
1
16M bytes
128M (4M x 8 bits x 4 banks)
1
16M bytes
2
32M bytes
64M (1M x 16 bits x 4 banks)
1
8M bytes
64M (2M x 8 bits x 4 banks)
1
8M bytes
2
16M bytes
16M (512 x 16 bits x 2 banks)
1
2M bytes
16M (1M x 8 bits x 2 banks)
1
2M bytes
2
4M bytes
Summary of Contents for CMOS 32-Bit Single Chip Microcomputer S1C33L03
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Page 15: ...S1C33L03 PRODUCT PART ...
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Page 147: ...S1C33L03 FUNCTION PART ...
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Page 149: ...S1C33L03 FUNCTION PART I OUTLINE ...
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Page 152: ...I OUTLINE INTRODUCTION B I 1 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 162: ...I OUTLINE LIST OF PINS B I 3 8 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 163: ...S1C33L03 FUNCTION PART II CORE BLOCK ...
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Page 166: ...II CORE BLOCK INTRODUCTION B II 1 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 172: ...II CORE BLOCK CPU AND OPERATING MODE B II 2 6 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 176: ...II CORE BLOCK INITIAL RESET B II 3 4 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 224: ...II CORE BLOCK BCU Bus Control Unit B II 4 48 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 262: ...II CORE BLOCK DBG Debug Unit B II 7 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 263: ...S1C33L03 FUNCTION PART III PERIPHERAL BLOCK ...
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Page 266: ...III PERIPHERAL BLOCK INTRODUCTION B III 1 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 322: ...III PERIPHERAL BLOCK WATCHDOG TIMER B III 5 4 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 415: ...S1C33L03 FUNCTION PART IV ANALOG BLOCK ...
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Page 418: ...IV ANALOG BLOCK INTRODUCTION B IV 1 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 434: ...IV ANALOG BLOCK A D CONVERTER B IV 2 16 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 435: ...S1C33L03 FUNCTION PART V DMA BLOCK ...
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Page 438: ...V DMA BLOCK INTRODUCTION B V 1 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 492: ...V DMA BLOCK IDMA Intelligent DMA B V 3 18 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 493: ...S1C33L03 FUNCTION PART VI SDRAM CONTROLLER BLOCK ...
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Page 531: ...S1C33L03 FUNCTION PART VII LCD CONTROLLER BLOCK ...
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Page 579: ...S1C33L03 FUNCTION PART Appendix I O MAP ...
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