DF2218BR24V Renesas Electronics America, DF2218BR24V Datasheet - Page 187

• Manufacturer Part Number: DF2218BR24V
• Description: IC H8S/2218 MCU FLASH 112-LFBGA
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2200r

Specifications of DF2218BR24V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 24MHz
• Connectivity: SCI, SmartCard, USB
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 69
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 12K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 6x10b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 112-LFBGA
• For Use With: HS0005KCU11H - EMULATOR E10A-USB H8S(X),SH2(A)3DK2218-SS - KIT DEV H8S/2218 WINDOWS SIDESHW3DK2218 - DEV EVAL KIT H8S/2218
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

6.5
The CPU is driven by a system clock (φ), denoted by the symbol φ. The period from one rising
edge of φ to the next is referred to as a "state." The memory cycle or bus cycle consists of one,
two, or three states. Different methods are used to access on-chip memory, on-chip peripheral
modules, and the external address space.
6.5.1
On-chip memory is accessed in one state. The data bus is 16 bits wide, permitting both byte and
word transfer instruction. Figure 6.4 shows the on-chip memory access cycle. Figure 6.5 shows the
pin states.
Basic Timing
On-Chip Memory (ROM, RAM) Access Timing
Internal address bus
Read
access
Write
access
φ
Figure 6.4 On-Chip Memory Access Cycle
Internal read signal
Internal data bus
Internal write signal
Internal data bus
Bus cycle
Address
T
Rev.7.00 Dec. 24, 2008 Page 131 of 698
1
Read data
Write data
REJ09B0074-0700