HD64F7144F50V Renesas Electronics America, HD64F7144F50V Datasheet - Page 140
HD64F7144F50V
Manufacturer Part Number
HD64F7144F50V
Description
IC SUPERH MCU FLASH 256K 112QFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7144r
Specifications of HD64F7144F50V
Core Processor
SH-2
Core Size
32-Bit
Speed
50MHz
Connectivity
EBI/EMI, I²C, SCI
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
74
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
112-QFP
For Use With
HS0005KCU11H - EMULATOR E10A-USB H8S(X),SH2(A)EDK7145 - DEV EVALUATION KIT SH7145
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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6. Interrupt Controller (INTC)
Rev.4.00 Mar. 27, 2008 Page 94 of 882
REJ09B0108-0400
Notes: I3 to I0 are Interrupt mask bits of status register (SR) in the CPU
Copy accept-interrupt
Branch to exception
execution state
Save SR to stack
Save PC to stack
IRQOUT = high
Read exception
IRQOUT = low
level to I3 to I0
service routine
Interrupt?
vector table
Program
1. IRQOUT is the same signal as interrupt request signal to the CPU (see figure 6.1).
2. When the accepted interrupt is sensed by edge, a high level is output from the IRQOUT pin at the moment when
the IRQ status register (ISR). Interrupts held pending due to edge detection are cleared
by a power-on reset or a manual reset.
NMI?
Yes
Therefore, IRQOUT is output when the request priority level is higher than the level in bits I3–I0 of SR.
the CPU starts interrupt exception processing instead of instruction execution (namely, before saving SR to stack).
However, if the interrupt controller accepts an interrupt with a higher priority than the interrupt just to be accepted
and has output an interrupt request to the CPU, the IRQOUT pin holds low level.
Yes
No
No
User break?
*1
*2
Yes
Figure 6.3 Interrupt Sequence Flowchart
No
interrupt?
H-UDI
Yes
Yes
No
interrupt?
level 14?
Level 15
I3 to I0 ≤
No
Yes
Yes
No
interrupt?
level 13?
Level 14
I3 to I0 ≤
No
Yes
Yes
No
interrupt?
I3 to I0 =
level 0?
Level 1
No
Yes
No
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