TMP86xy12MG Toshiba, TMP86xy12MG Datasheet - Page 48

• Manufacturer Part Number: TMP86xy12MG
• Manufacturer: Toshiba

Specifications of TMP86xy12MG

• Package: SSOP30
• Rom Types (m=mask,p=otp,f=flash): M/F
• Rom Size: 16
• Ram Size: 512
• Driver Led: 8
• Driver Lcd: -
• Spi/sio Channels: 1
• Uart/sio Channels: 1
• I2c/sio Channels: -
• High-speed Serial Output: -
• Adc 8-bit Channels: -
• Adc 10-bit Channels: 8
• Da Converter Channels: -
• Timer Counter 18-bit Channel: IGBT
• Timer Counter 16-bit Channel: 1
• Timer Counter 8-bit Channel: 2
• Motor Channels: -
• Watchdog Timer: Y
• Dual Clock: Y
• Clock Gear: -
• Number Of I/o Ports: 24
• Power Supply (v): 4.5 to 5.5

3.3 Interrupt Sequence
Interrupt
request
Interrupt
latch (IL)
IMF
Execute
instruction
PC
SP
3.3.1 Interrupt acceptance processing is packaged as follows.
“0” by resetting or an instruction. Interrupt acceptance sequence requires 8 machine cycles (2 µs @16 MHz) after the
completion of the current instruction. The interrupt service task terminates upon execution of an interrupt return
instruction [RETI] (for maskable interrupts) or [RETN] (for non-maskable interrupts). Figure 3-1 shows the timing
chart of interrupt acceptance processing.
An interrupt request, which raised interrupt latch, is held, until interrupt is accepted or interrupt latch is cleared to
Note 1: a: Return address entry address, b: Entry address, c: Address which RETI instruction is stored
Note 2: On condition that interrupt is enabled, it takes 38/fc [s] or 38/fs [s] at maximum (If the interrupt latch is set at the first
1-machine cycle
Figure 3-1 Timing Chart of Interrupt Acceptance/Return Interrupt Instruction
service program
a − 1
Note:When the contents of PSW are saved on the stack, the contents of IMF are also saved.
Example: Correspondence between vector table address for INTTBT and the entry address of the interrupt
machine cycle on 10 cycle instruction) to start interrupt acceptance processing since its interrupt latch is set.
instruction
a. The interrupt master enable flag (IMF) is cleared to “0” in order to disable the acceptance of any fol-
b. The interrupt latch (IL) for the interrupt source accepted is cleared to “0”.
c. The contents of the program counter (PC) and the program status word, including the interrupt master
d. The entry address (Interrupt vector) of the corresponding interrupt service program, loaded on the vec-
e. The instruction stored at the entry address of the interrupt service program is executed.
Execute
a
lowing interrupt.
enable flag (IMF), are saved (Pushed) on the stack in sequence of PSW + IMF, PCH, PCL. Mean-
while, the stack pointer (SP) is decremented by 3.
tor table, is transferred to the program counter.
FFECH
FFEDH
a + 1
Vector table address
n
Figure 3-2 Vector table address,Entry address
D2H
03H
Interrupt acceptance
a
n − 1
Vector
n − 2
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b
b + 1
b + 2
instruction
Execute
b + 3
n - 3
D203H
D204H
Entry address
c + 1
Interrupt service task
0FH
06H
n − 2 n − 1
c + 2
Execute RETI instruction
Interrupt
service
program
TMP86CH12MG
a
a + 1
n
a + 2