參數(shù)資料
型號(hào): UPD780021AYGC-XXX-8BS
元件分類(lèi): 微控制器/微處理器
英文描述: 8-BIT, MROM, 8.38 MHz, MICROCONTROLLER, PQFP64
封裝: 14 X 14 MM, PLASTIC, LQFP-64
文件頁(yè)數(shù): 14/96頁(yè)
文件大?。?/td> 723K
代理商: UPD780021AYGC-XXX-8BS
21
PD780021A, 780022A, 780023A, 780024A, 780021AY, 780022AY, 780023AY, 780024AY
Data Sheet U14042EJ4V0DS
Note
The internal ROM and internal high-speed RAM capacities vary depending on the product (see the following
table).
Part Number
Last Address of Internal ROM
Start Address of Internal High-Speed RAM
nnnnH
mmmmH
PD780021A, 780021AY
1FFFH
FD00H
PD780022A, 780022AY
3FFFH
PD780023A, 780023AY
5FFFH
FB00H
PD780024A, 780024AY
7FFFH
4. MEMORY SPACE
Figure 4-1 shows the memory map of the
PD780021A, 780022A, 780023A, 780024A, 780021AY,
780022AY, 780023AY, and 780024AY.
Figure 4-1. Memory Map
Special function registers (SFR)
256
× 8 bits
General-purpose
registers
32
× 8 bits
Internal high-speed
RAMNote
Reserved
External memory
Internal ROMNote
Data memory
space
Program memory
space
FFFFH
FF00H
FEFFH
FEE0H
FEDFH
mmmmH
mmmmH – 1
F7FFH
nnnnH + 1
nnnnH
0000H
Program area
CALLF entry area
Program area
CALLT table area
Vector table area
nnnnH
1000H
0FFFH
0800H
07FFH
0080H
007FH
0040H
003FH
0000H
F800H
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