參數(shù)資料
型號: UPD78F4216AYGC-8EU
廠商: NEC Corp.
英文描述: ER 1C 1#12 PIN PLUG
中文描述: 馬鞍山集成電路
文件頁數(shù): 21/60頁
文件大?。?/td> 349K
代理商: UPD78F4216AYGC-8EU
Data Sheet U14125EJ1V0DS00
21
μ
PD78F4216A, 78F4218A, 78F4216AY, 78F4218AY
(2)
μ
PD78F4218A, 78F4218AY
Figure 5-2. Internal Memory Size Switching Register (IMS) Format
Address: 0FFFCH
After reset: FFH W
5
7
6
4
3
2
1
0
IMS
1
1
ROM1
ROM0
1
1
RAM1
RAM0
ROM1
ROM0
Internal ROM Capacity Selection
0
0
64 KB
0
1
128 KB
1
0
192 KB
1
1
256 KB
RAM1
RAM0
Peripheral RAM Capacity Selection
0
0
3,072 bytes
0
1
6,656 bytes
1
0
7,168 bytes
1
1
12,288 bytes
Caution IMS is not provided on the mask ROM versions (
μ
PD784217A, 784218A, 784217AY, and
784218AY).
Table 5-2 shows the IMS setting values to make the memory mapping the same as that of the mask ROM
versions.
Table 5-2. Setting Value of Internal Memory Size Switching Register (IMS)
Target Mask ROM Version
IMS Setting Value
μ
PD784217A, 784217AY
EFH
μ
PD784218A, 784218AY
FFH
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