Specifications

S1C60N04 TECHNICAL MANUAL EPSON 7
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Memory Map)
CHAPTER 4PERIPHERAL CIRCUITS AND OPERATION
Peripheral circuits (timer, I/O, and so on) of the S1C60N04 are memory mapped. Thus, all the peripheral
circuits can be controlled by using memory operations to access the I/O memory. The following sections
describe how the peripheral circuits operate.
4.1 Memory Map
The data memory of the S1C60N04 has an address space of 188 words, of which 32 words are allocated to
display memory and 12 words, to I/O memory. Figure 4.1.1 show the overall memory map for the
S1C60N04, and Table 4.1.1, the memory maps for the peripheral circuits (I/O space).
Address
Page High
Low
0123456789ABCDE
F
M0 M1 M2 M3 M4 M5 M6 M7 M8 M9 MA MB MC MD ME MF
3
0
1
2
4
5
6
7
8
9
A
B
C
D
E
F
0
RAM area (000H–08FH)
144 words × 4 bits (R/W)
Display memory area (090H–0AFH)
32 words × 4 bits (W only)
Unused area
I/O memory See Table 4.1.1
Fig. 4.1.1 Memory map
Note: Memory is not mounted in unused area within the memory map and in memory area not indicated
in this chapter. For this reason, normal operation cannot be assured for programs that have been
prepared with access to these areas.