DF2170BVTE33V Renesas Electronics America, DF2170BVTE33V Datasheet - Page 92

• Manufacturer Part Number: DF2170BVTE33V
• Description: IC H8S/2170 MCU FLASH 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2170BVTE33V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 33MHz
• Connectivity: SCI, USB
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 76
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• For Use With: HS0005KCU11H - EMULATOR E10A-USB H8S(X),SH2(A)3DK2166 - DEV EVAL KIT H8S/2166
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -

4.3.2
If an interrupt is accepted after a reset and before the stack pointer (SP) is initialized, the PC and
CCR will not be saved correctly, leading to a program crash. To prevent this, all interrupt requests,
including NMI, are disabled immediately after a reset. Since the first instruction of a program is
always executed immediately after the reset state ends, make sure that this instruction initializes
the stack pointer (example: MOV.L #xx: 32, SP).
4.3.3
After a reset is cancelled, the module stop control register (MSTPCR) is initialized, and all
modules except the DMAC operate in module stop mode. Therefore, the registers of on-chip
peripheral modules cannot be read from or written to. To read from and write to these registers,
clear module stop mode.
Rev. 2.00, 03/04, page 58 of 534
φ
RES
Internal address bus
Internal read signal
Internal write signal
Internal data bus
(1), (3)
(2), (4)
Interrupts after Reset
On-Chip Peripheral Modules after Reset is Cancelled
(5)
(6)
Reset exception handling vector address ((1) = H'000000, (3) = H'000002)
Start address (contents of reset exception handling vector address)
Start address ((5) = (2)(4))
First program instruction
Figure 4.1 Reset Sequence
(1)
(2)
Vector
fetch
High
(4)
processing
(3)
Internal
Prefetch of first program
instruction
(5)
(6)