參數(shù)資料
型號(hào)： 935086530512
廠商： NXP SEMICONDUCTORS
元件分類： 微控制器/微處理器
英文描述： 8-BIT, 16 MHz, MICROCONTROLLER, PQCC68
封裝： PLASTIC, LCC-68
文件頁(yè)數(shù)： 79/112頁(yè)
文件大小： 693K
代理商： 935086530512
1996 Jun 27
69
Philips Semiconductors
Product specication
8-bit microcontroller with on-chip CAN
P8xC592
15.4
Power-down Mode
The instruction that sets bit PCON.1 to HIGH, is the last
one executed before entering the Power-down mode. In
Power-down mode the oscillator of the P8xC592 is
stopped. If the CAN-controller is in use, it is recommended
to set it into Sleep mode before entering Power-down
mode. However, setting PCON.1 to HIGH also sets the
Sleep bit (CAN-controller Command Register bit 4) to
HIGH.
The P8xC592 leaves Power-down mode either by a
hardware reset or by a CAN Wake-Up interrupt
(due to activity on the CAN-bus),
if the SIO1 (CAN) interrupt source is enabled
(contents of register IEN0 = 1X1XXXXXB).
A hardware reset affects the whole P8xC592, but leaves
the contents of the on-chip RAM unchanged
(CAN-controller-and CPU's SFRs are reset, see
Section 13.5.2, Chapter 17 and Table 40). A CAN
Wake-Up interrupt during Power-down mode causes a
reset output pulse with a width of 6144 machine cycles
(4.6 ms with fCLK = 16 MHz). All hardware except that for
the CAN-controller of the P8xC592 is reset (i.e. the
contents of all CAN-controller registers are preserved).
A capacitance connected to the RST pin can be used to
lengthen the internally generated reset pulse. If the pulse
exceeds 8192 machine cycles, the CAN-controller part is
reset too.
Table 82 Status of external pins during Idle and Power-down modes
Note
1. If the port pins P1.6 and P1.7 are used as the CAN transmitter outputs (CTX0 and CTX1), then during Sleep and
Power-down mode these pins output a ‘recessive’ level (see Sections 13.5.2 and 13.5.11).
MODE
PROGRAM
ALE
PSEN
PORT0
PORT1(1)
PORT2
PORT3
PORT4
PWM0/
PWM1
Idle
internal
1
port data
1
external
1
oating
port data
address
port data
1
Power-down
internal
0
port data
1
external
0
oating
port data
1
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