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鍙冩暩(sh霉)璩囨枡
鍨嬭櫉(h脿o)锛� MC908LD64IFUE
寤犲晢锛� Freescale Semiconductor
鏂囦欢闋佹暩(sh霉)锛� 29/362闋�
鏂囦欢澶�?銆�?/td> 0K
鎻忚堪锛� IC MCU 8BIT FOR LCD 64-QFP
妯�(bi膩o)婧�(zh菙n)鍖呰锛� 420
绯诲垪锛� HC08
鏍稿績铏曠悊鍣細 HC08
鑺珨灏哄锛� 8-浣�
閫熷害锛� 6MHz
閫i€氭€э細 I²C锛孶SB
澶栧湇瑷�(sh猫)鍌欙細 OSD锛孭OR锛孭WM
杓稿叆/杓稿嚭鏁�(sh霉)锛� 39
绋嬪簭瀛樺劜(ch菙)鍣ㄥ閲忥細 60KB锛�60K x 8锛�
绋嬪簭瀛樺劜(ch菙)鍣ㄩ鍨嬶細 闁冨瓨
RAM 瀹归噺锛� 2K x 8
闆诲 - 闆绘簮 (Vcc/Vdd)锛� 3 V ~ 3.6 V
鏁�(sh霉)鎿�(j霉)杞�(zhu菐n)鎻涘櫒锛� A/D 6x8b
鎸暕鍣ㄥ瀷锛� 鍏�(n猫i)閮�
宸ヤ綔婧害锛� 0°C ~ 85°C
灏佽/澶栨锛� 64-QFP
鍖呰锛� 鎵樼洡
鐢�(ch菐n)鍝佺洰閷勯爜闈細 725 (CN2011-ZH PDF)
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System Integration Module (SIM)
Data Sheet
MC68HC908LD64 鈥� Rev. 3.0
124
System Integration Module (SIM)
Freescale Semiconductor
9.6.1 Interrupts
An interrupt temporarily changes the sequence of program execution to
respond to a particular event. Figure 9-10 flow charts the handling of
system interrupts.
Interrupts are latched, and arbitration is performed in the SIM at the start
of interrupt processing. The arbitration result is a constant that the CPU
uses to determine which vector to fetch. Once an interrupt is latched by
the SIM, no other interrupt can take precedence, regardless of priority,
until the latched interrupt is serviced (or the I bit is cleared).
At the beginning of an interrupt, the CPU saves the CPU register
contents on the stack and sets the interrupt mask (I bit) to prevent
additional interrupts. At the end of an interrupt, the RTI instruction
recovers the CPU register contents from the stack so that normal
processing can resume. Figure 9-8 shows interrupt entry timing. Figure
9-9 shows interrupt recovery timing.
Figure 9-8
. Interrupt Entry
Figure 9-9. Interrupt Recovery
MODULE
IDB
R/W
INTERRUPT
DUMMY
SP
SP 鈥� 1
SP 鈥� 2
SP 鈥� 3
SP 鈥� 4
VECT H
VECT L
START ADDR
IAB
DUMMY
PC 鈥� 1[7:0] PC 鈥� 1[15:8]
X
A
CCR
V DATA H
V DATA L
OPCODE
I BIT
MODULE
IDB
R/W
INTERRUPT
SP 鈥� 4
SP 鈥� 3
SP 鈥� 2
SP 鈥� 1
SP
PC
PC + 1
IAB
CCR
A
X
PC 鈥� 1[15:8] PC 鈥� 1[7:0]
OPCODE
OPERAND
I BIT
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