參數(shù)資料
型號(hào)： TMP86PS44UG
廠商： Toshiba Corporation
英文描述： Zener Diode; Application: General; Pd (mW): 500; Vz (V): 6.7 to 7.0; Condition Iz at Vz (mA): 5; C (pF) max: -; Condition VR at C (V):   ESD (kV) min: -; Package: DO-35
中文描述： 8位微控制器
文件頁(yè)數(shù)： 43/180頁(yè)
文件大小： 1566K
代理商： TMP86PS44UG
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Page 33
TMP86PS44UG
3. Interrupt Control Circuit
The TMP86PS44UG has a total of 19 interrupt sources excluding reset, of which 3 source levels are multiplexed.
Interrupts can be nested with priorities. Four of the internal interrupt sources are non-maskable while the rest are
maskable.
Interrupt sources are provided with interrupt latches (IL), which hold interrupt requests, and independent vectors.
The interrupt latch is set to “1” by the generation of its interrupt request which requests the CPU to accept its inter-
rupts. Interrupts are enabled or disabled by software using the interrupt master enable flag (IMF) and interrupt enable
flag (EF). If more than one interrupts are generated simultaneously, interrupts are accepted in order which is domi-
nated by hardware. However, there are no prioritized interrupt factors among non-maskable interrupts.
Note 1: The INTSEL register is used to select the interrupt source to be enabled for each multiplexed source level (see 3.3 Inter-
rupt Source Selector (INTSEL)).
Note 2: To use the address trap interrupt (INTATRAP), clear WDTCR1<ATOUT> to “0” (It is set for the “reset request” after reset is
cancelled). For details, see “Address Trap”.
Note 3: To use the watchdog timer interrupt (INTWDT), clear WDTCR1<WDTOUT> to "0" (It is set for the "Reset request" after
reset is released). For details, see "Watchdog Timer".
3.1
Interrupt latches (IL15 to IL2)
An interrupt latch is provided for each interrupt source, except for a software interrupt and an executed the unde-
fined instruction interrupt. When interrupt request is generated, the latch is set to “1”, and the CPU is requested to
accept the interrupt if its interrupt is enabled. The interrupt latch is cleared to "0" immediately after accepting inter-
rupt. All interrupt latches are initialized to “0” during reset.
The interrupt latches are located on address 003CH and 003DH in SFR area. Each latch can be cleared to "0" indi-
vidually by instruction. However, IL2 and IL3 should not be cleared to "0" by software. For clearing the interrupt
latch, load instruction should be used and then IL2 and IL3 should be set to "1". If the read-modify-write instructions
such as bit manipulation or operation instructions are used, interrupt request would be cleared inadequately if inter-
rupt is requested while such instructions are executed.
Interrupt Factors
Enable Condition
Interrupt
Latch
Vector
Address
Priority
Internal/External
(Reset)
Non-maskable
–
FFFE
1
Internal
INTSWI (Software interrupt)
Non-maskable
–
FFFC
2
Internal
INTUNDEF (Executed the undefined instruction
interrupt)
Non-maskable
–
FFFC
2
Internal
INTATRAP (Address trap interrupt)
Non-maskable
IL2
FFFA
2
Internal
INTWDT (Watchdog timer interrupt)
Non-maskable
IL3
FFF8
2
External
INT0
IMF EF4 = 1, INT0EN = 1
IL4
FFF6
5
External
INT1
IMF EF5 = 1
IL5
FFF4
6
Internal
INTTBT
IMF EF6 = 1
IL6
FFF2
7
Internal
INTTC1
IMF EF7 = 1
IL7
FFF0
8
External
INT2
IMF EF8 = 1
IL8
FFEE
9
Internal
INTTC4
IMF EF9 = 1
IL9
FFEC
10
Internal
INTTC3
IMF EF10 = 1
IL10
FFEA
11
External
INT3
IMF EF11 = 1
IL11
FFE8
12
Internal
INTSIO
IMF EF12 = 1
IL12
FFE6
13
Internal
INTRXD
IMF EF13 = 1, IL13ER = 0
IL13
FFE4
14
Internal
INTTC2
IMF EF13 = 1, IL13ER = 1
External
INT4
IMF EF14 = 1, IL14ER = 0
IL14
FFE2
15
Internal
INTTXD
IMF EF14 = 1, IL14ER = 1
External
INT5
IMF EF15 = 1, IL15ER = 0
IL15
FFE0
16
Internal
INTADC
IMF EF15 = 1, IL15ER = 1
相關(guān)PDF資料
PDF描述
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