參數(shù)資料
型號: W78CE354E
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): 16/44頁
文件大小: 426K
代理商: W78CE354E
W78C354
- 16 -
To use the alternate function H-clamp pulse (SOA output) of P1.4 (P1.5), bit P14SF (P15SF) of the
SFR CONTREG4 must be set to "1" and a "0" must be written to P1.4 (P1.5).
CONDITION OF P14SF
PORT 1.4 I/O PIN
FUNCTION
CONDITION OF P14SF
PORT 1.5 I/O PIN
FUNCTION
P14SF = 0
General I/O pin
P15SF = 0
General output pin
P14SF = 1 & P1.4 = 0
Hclamp pulse output
P15SF = 1 & P1.5 = 0
SOA output
E-2 Port 2
Port 2.0
2.2 are used for general purpose I/O functions only, whereas 2.3
2.7 have alternate
functions, as shown below. In the 40-pin and 48-pin DIP packages, SDAC10
13 have no dedicated
output pins, but share pins with P2.4
P2.7. Each pin can be used as an I/O or SDAC output pin by bit-
addressing SFR CONTREG4. When a pin is used for a special function, the output source current is 4
mA. Otherwise, the source current is 100
μ
A.
PINS
SPECIAL
FUNCTION
SPECIAL FUNCTION
CONTROL BIT
DESCRIPTION
P2.0
-
-
-
P2.1
-
-
-
P2.2
-
-
-
P2.3
STP
P23SF
Self -test pattern output
P2.4
SDAC10
P24SF
SDAC10 PWM output
P2.5
SDAC11
P25SF
SDAC11 PWM output
P2.6
SDAC12
P26SF
SDAC12 PWM output
P2.7
SDAC13
P27SF
SDAC13 PWM output
CL
D
Q
Q
Int.Bus
Write to
Latch
Read
Latch
Read
Pin
P2.0 to P2.2
Vcc
Internal
Pullup
Figure 3-1. P2.0 to P2.2 architecture
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