參數(shù)資料
型號(hào)： UPD78322GJ-XXX-5BJ
元件分類： 微控制器/微處理器
英文描述： 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP74
封裝： 20 X 20 MM, PLASTIC, QFP-74
文件頁數(shù)： 11/90頁
文件大?。?/td> 649K
代理商： UPD78322GJ-XXX-5BJ
17
PD78320, 78322
2.
CPU ARCHITECTURE
2.1
MEMORY SPACE
In the
PD78322 a maximum of 64K bytes of memory can be addressed (see Figure 2-1).
Program fetches can be performed within the area from 0000H to FDFFH. However, when external memory expansion
is implemented in the area from FE00H to FFFFH (main RAM and special function register area), program fetches can also
be performed on this area. In this case, a program fetch is performed on the external memory, not on the main RAM or special
function registers.
(1)
Vector table area
Interrupt request from the peripheral hardware, reset input, external interrupt request and interrupt branch address
by break instruction are stored in the 0000H to 003FH 64-byte area. Generation of an interrupt request sets the even
address content of each table in the lower 8 bits of the program counter (PC) and the odd address content in the higher
8 bits, and a branch is made.
Interrupt Source
Vector Table Address
RESET
(RESET pin input) ...........................................
0000H
NMI
(NMI pin input) ................................................
0002H
WDT
(Watchdog timer) ............................................
0004H
TMF0
(Realtime pulse unit) .......................................
0006H
EXF0
(INTP0 pin input) .............................................
0008H
EXF1
(INTP1 pin input) .............................................
000AH
EXF2
(INTP2 pin input) .............................................
000CH
EXF3
(INTP3 pin input) .............................................
000EH
EXF4/CCFX0
(INTP4 pin input/realtime pulse unit) .............
0010H
EXF5/CCFX1
(INTP5 pin input/realtime pulse unit) .............
0012H
EXF6/TI
(INTP6/TI pin input) ........................................
0014H
CMF00
(Realtime pulse unit) .......................................
0016H
CMF01
(Realtime pulse unit) .......................................
0018H
CMF02
(Realtime pulse unit) .......................................
001AH
CMF03
(Realtime pulse unit) .......................................
001CH
CMF10
(Realtime pulse unit) .......................................
001EH
CMF11
(Realtime pulse unit) .......................................
0020H
SRF
(Serial receive complete) ................................
0024H
STF
(Serial send complete) ....................................
0026H
CSIIF
(Clocked serial interface) ................................
0028H
ADF
(A/D converter) ................................................
002AH
Operation code trap ...................................................................
003CH
BRK
(Break instruction) ...........................................
003EH
If bit 1 (TPF) of CPU control word (CCW) is set to 1, the 8002H to 803FH external memory area is used as an interrupt
vector table in place of 0002H to 003FH.
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