DF2345TE20 Renesas Electronics America, DF2345TE20 Datasheet - Page 862

• Manufacturer Part Number: DF2345TE20
• Description: MCU 5V 128K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of DF2345TE20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 71
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K 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: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F2345TE20; HD64F2345TE20

Appendix B Internal I/O Register
TCSR—Timer Control/Status Register
Bit
Initial value
Read/Write
Rev. 4.00 Feb 15, 2006 page 836 of 900
REJ09B0291-0400
The method for writing to TCSR is different from that for general registers to prevent inadvertent overwriting.
For details see section 11.2.4, Notes on Register Access.
Note: * Can only be written with 0 for flag clearing.
:
:
:
Overflow Flag
R/(W)*
OVF
0
1
7
0
[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
Timer Mode Select
WT/IT
R/W
0
1
6
0
Interval timer mode: Sends the CPU an interval timer interrupt request
(WOVI) when TCNT overflows
Watchdog timer mode: Generates the WDTOVF signal when
TCNT overflows
Timer Enable
TME
R/W
0
1
5
0
TCNT is initialized to H'00 and halted
TCNT counts
—
—
4
1
Note: *
CKS2 CKS1 CKS0
Clock Select
—
—
3
1
0
1
H'FFBC (W) H'FFBC (R)
0
1
0
1
The overflow period is the time from when TCNT
starts counting up from H'00 until overflow occurs.
CKS2
R/W
2
0
0
1
0
1
0
1
0
1
/2 (initial value)
/64
/128
/512
/2048
/8192
/32768
/131072
CKS1
R/W
Clock
1
0
CKS0
R/W
0
0
(when
25.6µs
819.2µs
1.6ms
6.6ms
26.2ms
104.9ms
419.4ms
1.68s
Overflow period *
= 20 MHz)
WDT