DF2398TE20 Renesas Electronics America, DF2398TE20 Datasheet - Page 109

• Manufacturer Part Number: DF2398TE20
• Description: IC H8S MCU FLASH 256K 120TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of DF2398TE20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 87
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 120-TQFP, 120-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F2398TE20; HD64F2398TE20

4.7
When accessing word data or longword data, the H8S/2357 Group assumes that the lowest address bit is 0. The stack
should always be accessed by word transfer instruction or longword transfer instruction, and the value of the stack pointer
(SP, ER7) should always be kept even. Use the following instructions to save registers:
Use the following instructions to restore registers:
Setting SP to an odd value may lead to a malfunction. Figure 4-5 shows an example of what happens when the SP value is
odd.
PUSH.W
PUSH.L
POP.W
POP.L
Notes on Use of the Stack
Rn
ERn
Rn
ERn
SP
CCR: Condition code register
PC:
R1L: General register R1L
SP:
Note: This diagram illustrates an example in which the interrupt control mode
Legend:
SP set to H'FFFEFF
(or MOV.W Rn, @-SP)
(or MOV.L ERn, @-SP)
(or MOV.W @SP+, Rn)
(or MOV.L @SP+, ERn)
Stack pointer
Program counter
is 0, in advanced mode.
TRAPA instruction executed
Figure 4-5 Operation when SP Value is Odd
SP
Data saved above SP
CCR
PC
MOV.B R1L, @–ER7
SP
Contents of CCR lost
R1L
PC
Rev.6.00 Oct.28.2004 page 79 of 1016
H'FFFEFA
H'FFFEFB
H'FFFEFC
H'FFFEFD
H'FFFEFF
REJ09B0138-0600H