參數(shù)資料
型號(hào): PD784054GCA2
廠商: NEC Corp.
英文描述: 16-BIT SINGLE-CHIP MICROCONTROLLER
中文描述: 16位單片機(jī)
文件頁(yè)數(shù): 28/86頁(yè)
文件大?。?/td> 579K
代理商: PD784054GCA2
μ
PD784054(A)
28
Table 7-1. Port Function
Port Name
Pin Name
Function
Specification of Pull-Up Resistor by Software
Port 0
P00-P03
Can be set in input or output mode bit-wise.
All pins in input mode
Port 1
P10-P12
Port 2
P20-P27
Can be set in input or output mode bit-wise
(however, P20 is input-only).
Port 3
P30-P37
Can be set in input or output mode bit-wise.
Port 4
P40-P47
All pins in input mode
Port 5
P50-P57
Port 6
P60-P63
Port 7
P70-P77
Input port
Port 8
P80-P87
Port 9
P90-P94
Can be set in input or output mode bit-wise.
All pins in input mode
7.2 Clock Generation Circuit
The clock generation circuit generates and controls the internal system clock (CLK) to be supplied to the CPU.
Figure 7-2 shows the configuration of this circuit.
Figure 7-2. Block Diagram of Clock Generation Circuit
Internal system clock (CLK)
Clock
generation
circuit
f
XX
or f
X
f
CLK
X2
X1
Divider
1/2
Remark
f
XX
: crystal/ceramic oscillation frequency
f
X
: external clock frequency
f
CLK
: internal system clock frequency
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