参数资料
型号: P83C654IBPN
厂商: NXP SEMICONDUCTORS
元件分类: 微控制器/微处理器
英文描述: CONNECTOR ACCESSORY
中文描述: 8-BIT, MROM, 24 MHz, MICROCONTROLLER, PDIP40
封装: 0.600 INCH, PLASTIC, DIP-40
文件页数: 12/88页
文件大小: 497K
代理商: P83C654IBPN
Philips Semiconductors
Product data
P83C654X2/P87C654X2
80C51 8-bit microcontroller family
16 kB OTP/ROM,
256B RAM, low voltage (2.7 to 5.5 V), low power, high speed
(30/33 MHz)
2004 Apr 20
12
The Clock-Out frequency depends on the oscillator frequency and
the reload value of Timer 2 capture registers (RCAP2H, RCAP2L)
as shown in this equation:
Oscillator Frequency
(65536
RCAP2H,RCAP2L)
n
n =
2 in 6-clock mode
4 in 12-clock mode
Where (RCAP2H,RCAP2L) = the content of RCAP2H and RCAP2L
taken as a 16-bit unsigned integer.
In the Clock-Out mode Timer 2 roll-overs will not generate an
interrupt. This is similar to when it is used as a baud-rate generator.
It is possible to use Timer 2 as a baud-rate generator and a clock
generator simultaneously. Note, however, that the baud-rate and the
Clock-Out frequency will be the same.
Table 2.
External Pin Status During Idle and Power-Down Mode
MODE
PROGRAM MEMORY
ALE
PSEN
PORT 0
PORT 1
PORT 2
PORT 3
Idle
Internal
1
1
Data
Data
Data
Data
Idle
External
1
1
Float
Data
Address
Data
Power-down
Internal
0
0
Data
Data
Data
Data
Power-down
External
0
0
Float
Data
Data
Data
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