D12321VF25V Renesas Electronics America, D12321VF25V Datasheet - Page 162
D12321VF25V
Manufacturer Part Number
D12321VF25V
Description
IC H8S/2300 MCU ROMLESS 128QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2300r
Datasheets
1.HEWH8E10A.pdf
(19 pages)
2.D12312SVTE25V.pdf
(341 pages)
3.D12322RVF25V.pdf
(1304 pages)
Specifications of D12321VF25V
Core Processor
H8S/2000
Core Size
16-Bit
Speed
25MHz
Connectivity
SCI, SmartCard
Peripherals
POR, PWM, WDT
Number Of I /o
86
Program Memory Type
ROMless
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
128-QFP
For Use With
EDK2329 - DEV EVALUATION KIT H8S/2329
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
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Section 5 Interrupt Controller
5.4.2
Enabling and disabling of IRQ interrupts and on-chip supporting module interrupts can be set by
means of the I bit in the CPU’s CCR. Interrupts are enabled when the I bit is cleared to 0, and
disabled when set to 1.
Figure 5.5 shows a flowchart of the interrupt acceptance operation in this case.
[1] If an interrupt source occurs when the corresponding interrupt enable bit is set to 1, an
[2] The I bit is then referenced. If the I bit is cleared to 0, the interrupt request is accepted. If the I
[3] Interrupt requests are sent to the interrupt controller, the highest-ranked interrupt according to
[4] When an interrupt request is accepted, interrupt exception handling starts after execution of the
[5] The PC and CCR are saved to the stack area by interrupt exception handling. The PC saved on
[6] Next, the I bit in CCR is set to 1. This masks all interrupts except NMI.
[7] A vector address is generated for the accepted interrupt, and execution of the interrupt
Rev.6.00 Sep. 27, 2007 Page 130 of 1268
REJ09B0220-0600
interrupt request is sent to the interrupt controller.
bit is set to 1, only an NMI interrupt is accepted, and other interrupt requests are held pending.
the priority system is accepted, and other interrupt requests are held pending.
current instruction has been completed.
the stack shows the address of the first instruction to be executed after returning from the
interrupt handling routine.
handling routine starts at the address indicated by the contents of that vector address.
Interrupt Control Mode 0
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