DF2398TE20 Renesas Electronics America, DF2398TE20 Datasheet - Page 972

• 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

TCSR—Timer Control/Status Register
Rev.6.00 Oct.28.2004 page 942 of 1016
REJ09B0138-0600H
Bit
Initial value
Read/Write
The method for writing to TCSR is different from that for general registers to prevent accidental
overwriting. For details see section 13.2.4, Notes on Register Access.
Note:
*
Can only be written with 0 for flag clearing.
:
:
:
R/(W)
Overflow Flag
OVF
7
0
0
1
*
Timer Mode Select
[Clearing condition]
Cleared by reading TCSR when OVF = 1, then writing 0 to OVF
[Setting condition]
Set when TCNT overflows from H'FF to H'00 in interval timer mode
Notes: 1. The WDTOVF pin function is not available in the
0
1
WT/IT
R/W
6
0
Interval timer mode: Sends the CPU an interval timer interrupt
request (WOVI) when TCNT overflows
Watchdog timer mode: Generates the WDTOVF signal
TCNT overflows
Timer Enable
2. For details of the case where TCNT overflows in
0
1
F-ZTAT version, H8S/2398, H8S/2394, H8S/2392, or
H8S/2390.
watchdog time mode, see section 13.2.3, Reset
Control/Status Register(RSTCSR).
Note: * The overflow period is the time from when TCNT
TCNT is initialized to H'00 and halted
TCNT counts
TME
R/W
Clock Select
CKS2 CKS1 CKS0
5
0
0
1
H'FFBC (W), H'FFBC (R)
starts counting up from H'00 until overflow occurs.
* 2
0
1
0
1
—
—
4
1
0
1
0
1
0
1
0
1
—
—
3
1
ø/2 (initial value)
ø/64
ø/128
ø/512
ø/2,048
ø/8,192
ø/32,768
ø/131,072
Clock
CKS2
R/W
2
0
CKS1
(when ø = 20 MHz)
R/W
25.6 s
819.2 s
1.6ms
6.6ms
26.2ms
104.9ms
419.4ms
1.68s
Overflow period*
1
0
WDT
*1
CKS0
when
R/W
0
0