DF2218BR24V Renesas Electronics America, DF2218BR24V Datasheet - Page 396

• 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: -

10.2
The WDT has the following three registers. For details, refer to section 21, List of Registers. To
prevent accidental overwriting, TCSR, TCNT, and RSTCSR have to be written to by a different
method to normal registers. For details, refer to section 10.5.1, Notes on Register Access.
• Timer counter (TCNT)
• Timer control/status register (TCSR)
• Reset control/status register (RSTCSR)
10.2.1
TCNT is an 8-bit readable/writable up-counter. TCNT is initialized to H'00 by a reset, when the
TME bit in TCSR is cleared to 0.
10.2.2
TCSR is an 8-bit readable/writable register. Its functions include selecting the clock source to be
input to TCNT, and selecting the timer mode.
Rev.7.00 Dec. 24, 2008 Page 340 of 698
REJ09B0074-0700
Register Descriptions
Timer Counter (TCNT)
Timer Control/Status Register (TCSR)
Internal reset signal*
(interrupt request
Legend:
TCSR:
TCNT:
RSTCSR:
Notes: When a sub-block is operating, φ will be φ
* The type of internal reset signal depends on a register setting.
signal)
WOVI
Timer control/status register
Timer counter
Reset control/status register
Figure 10.1 Block Diagram of WDT
RSTCSR
Interrupt
control
control
Reset
Overflow
Module bus
TCNT
Clock
SUB
WDT
.
Clock
select
TSCR
Internal clock
sources
interface
Bus
φ/2
φ/64
φ/128
φ/512
φ/2048
φ/8192
φ/32768
φ/131072