APPENDIX A <REFERENCE> EXTERNAL DEVICE INTERFACE TIMINGS
S1C33L03 PRODUCT PART
EPSON
A-127
A-1
A-ap
A.6
8255A
8255A interface setup examples
Operating
Read cycle
Output disable
frequency
Wait cycle
Read cycle
Write cycle
delay cycle
20MHz
9
∗
1
10
10
3.5
25MHz
11
12
12
3.5
33MHz
14
15
15
3.5
∗
2
8255A interface timing
SRAM interface
33MHz
25MHz
20MHz
Parameter
Symbol
Min.
Max.
Cycle
Time
Cycle
Time
Cycle
Time
<Read cycle>
Read cycle time
t
RC
300
–
15
450
12
480
10
500
Address access time
t
ACC
–
250
15
450
12
480
10
500
#CE access time
t
ACS
–
250
15
450
12
480
10
500
#OE access time
t
OE
–
250
14.5
435
11.5
460
9.5
475
Output disable delay time
t
OHZ
10
150
3.5
105
3.5
140
3.5
175
<Write cycle>
Write cycle time
t
WC
430
–
15
450
12
480
10
500
Address enable time
t
AW
400
–
14.5
435
11.5
460
9.5
475
Write pulse width
t
WP
400
–
14
420
11
440
9
450
Input data setup time
t
DW
100
–
14
420
11
440
9
450
Input data hold time
∗
3
t
DH
30
–
0.5
15
0.5
20
0.5
25
∗
1 The S1C33L03 enables up to 7 cycles of wait-cycle insertion. If a number of wait cycles more than 7 cycles
needs to be inserted, input the #WAIT signal from external hardware. Note that the interface must be set for
SRAM type devices to insert wait cycles using the #WAIT pin. (Refer to "BCU (Bus Control Unit)" in the
"S1C33L03 FUNCTION PART", for more information.)
∗
2 This setting cannot satisfy the 150 ns of output-disable delay time specification required for the 8255A. When
implementing such a low-speed device in the system, the external bus must be separated by inserting a 3-state
bus buffer at the output side (when viewed from the CPU) of the external system bus.
∗
3 If the data hold time that can be set is not sufficient for the device, secure it by connecting a bus repeater to the
external data bus D[15:0] or by inserting a latch at the output side of the external system interface.
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 ...
Page 148: ......
Page 149: ...S1C33L03 FUNCTION PART I OUTLINE ...
Page 150: ......
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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