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參數(shù)資料
| 型號： | W78CE354P |
| 廠商： | WINBOND ELECTRONICS CORP |
| 英文描述： | MONITOR MICROCONTROLLER |
| 中文描述： | 顯示器單片機(jī) |
| 文件頁數(shù)： | 7/44頁 |
| 文件大小： | 426K |
| 代理商： | W78CE354P |
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W78C354
Publication Release Date: October 1996
- 7 -
Revision A1
FUNCTIONAL DESCRIPTION
The W78C354's core architecture consists of an 80C32 MCU surrounded by various special function
registers, or SFRs (some of these are 80C32 standard registers, while others are newly added; see
Table 1), three general purpose I/O ports (P1, P2, and P3), one output-only port (P4), 256 bytes of
scratchpad RAM, two timer/counters (Timer0 and Timer1) and one 80C32 standard serial port. The
processor supports 109 different instructions (without "MOVX A, @DPTR" and "MOVX @DPTR, A"),
which are all compatible with the 80C32 family instruction set.
There are two major differences between the W78C354 and 80C32. First, the W78C354 cannot
access an external program or data memory. This function is unnecessary, because the W78C354's
16 KB of internal ROM and 512 bytes of on-chip RAM should be enough for most monitor
applications. Second, the W78C354 has a number of new SFRs (see Table 2), which provide more
powerful functions.
Table 1. W78C354 special function registers (SFRs)
F8
FF
F0
+ B
F7
E8
EF
E0
+ ACC
E7
D8
+ S1CON
S1STA
S1DAT
S1ADR
DF
D0
+ PSW
D7
C8
+ CONTREG4
CF
C0
C7
B8
+ IP
SBRM0
SBRM1
PORT4
SOAREG
SOACLR
BF
B0
+ P3
ADC
INTVECT
STATUS
HFCOUNTL
HFCOUNTH
VFCOUNTL
VFCOUNTH
B7
A8
+ IE
SDAC7
SDAC8
SDAC9
SDAC10
SDAC11
SDAC12
SDAC13
AF
A0
+ P2
SDAC0
SDAC1
SDAC2
SDAC3
SDAC4
SDAC5
SDAC6
A7
98
+ SCON
SBUF
BSDAC0
BSDAC1
WDTCLR
DDAC0
DDAC1
DDAC2
9F
90
+ P1
AUTOLOAD
DHREG
DVREG
DDC1
INTMSK
BDDAC
DBRM
97
88
+ TCON
TMOD
TL0
TL1
TH0
TH1
PARAL
PARAH
8F
80
+ CONTREG1
SP
DPL
DPH
CONTREG5
CONTREG2
PCON
87
Notes:
1. SFRs with a "+" are both byte and bit-addressable.
2. The registers in the shaded region are newly added to the 80C32.
A. Memory Address Space
The W78C354 operates in three separate address spaces:
(1) The first (Figure 1-1) is the 16 KB internal program space (0000H
3FFFH).
(2) The second (Figure 1-2) is the data memory space, which is 256 bytes in size (0000H
00FFH).
The data memory is integrated inside the chip rather than outside the chip, as in a standard
80C32. This data memory space must be accessed by the "MOVX @Ri" instruction.
(3) The third (Figure 1-3) is the same as in the standard 80C32.
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