DF2148ATE20 Renesas Electronics America, DF2148ATE20 Datasheet - Page 191

• Manufacturer Part Number: DF2148ATE20
• Description: IC H8S MCU FLASH 128K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2148ATE20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: Host Interface, I²C, IrDA, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 74
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F2148ATE20; HD64F2148ATE20

5.5.5
This LSI are capable of fast word access to on-chip memory, and high-speed processing can be
achieved by providing the program area in on-chip ROM and the stack area in on-chip RAM.
Table 5.8 shows interrupt response times—the interval between generation of an interrupt request
and execution of the first instruction in the interrupt handling routine. The symbols used in table
5.8 are explained in table 5.9.
Table 5.8
Notes: 1. Two states in case of internal interrupt.
Table 5.9
Legend:
m: Number of wait states in an external device access
No.
1
2
3
4
5
6
Total (using on-chip memory)
Instruction fetch
Branch address read
Stack manipulation
Item
Interrupt priority determination *
Number of wait states until executing
instruction ends *
PC, CCR stack save
Vector fetch
Instruction fetch *
Internal processing *
2. Refers to MULXS and DIVXS instructions.
3. Prefetch after interrupt acceptance and interrupt handling routine prefetch.
4. Internal processing after interrupt acceptance and internal processing after vector fetch.
Interrupt Response Times
Interrupt Response Times
Number of States in Interrupt Handling Routine Execution
2
3
Symbol
S
S
S
I
J
K
4
Internal
Memory
1
1
2-State
Access
4
Normal Mode
3
1 to 19+2
2
S
2
2
11 to 31
·
·
I
S
S
K
I
8-Bit Bus
Rev. 4.00 Sep 27, 2006 page 145 of 1130
·
3-State
Access
6+2m
S
I
Object of Access
External Device
Number of States
Section 5 Interrupt Controller
2-State
Access
2
Advanced Mode
3
1 to 19+2
2
2
2
2
12 to 32
·
·
·
S
S
S
K
I
I
REJ09B0327-0400
16-Bit Bus
·
S
I
3-State
Access
3+m