參數(shù)資料
型號: P90CL301
廠商: NXP Semiconductors N.V.
英文描述: Low voltage 16-bit microcontroller
中文描述: 低電壓16位微控制器
文件頁數(shù): 15/92頁
文件大?。?/td> 526K
代理商: P90CL301
1996 Dec 11
15
Philips Semiconductors
Preliminary specification
Low voltage 16-bit microcontroller
P90CL301BFH (C100)
6.6
Clock generation
An external clock can be used with the P90CL301BFH.
The duty cycle of the external clock should be 50/50
±
5%
over the full temperature and voltage range.
For peripherals like Watchdog Timer, I
2
C-bus, PWM,
Timer and baud rate generator, a programmable prescaler
generates a peripheral clock FCLK.
The prescaler is controlled by the System Control Register
(SYSCON). The internal clock is divided by a factor 2, 3, 4,
5, 6, 8 or 10 (function of bits PCLK0, PCLK1 and PCLK3;
see Table 15).
For the ADC a secondary peripheral clock FCLK2 is
derived from the peripheral clock by dividing it either by
4 or 2 (function of the bit PCLK2; see Table 14).
Fig.4 P90CL301BFH internal clock generation.
handbook, full pagewidth
SYSCON
(IDL)
SYSCON
(PCLK0, 1)
SYSCON
(PCLK3)
SYSCON
(PCLK2)
XTAL1
1/512
CLK
FCLK
mode 0 clock
FCLK2
UART1
UART0
1/2
1/3
1/4
1/5
1/2
1
1/4
1/2
BRG
SCON
CPU
BCON
1 1/4
ADC
TIMER 0/TIMER 1
PRESCALER
I
2
C-BUS INTERFACE
S1CON
PWM0/PWM1
WATCHDOG
Idle mode
MGD781
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