DF2148RTE20IV Renesas Electronics America, DF2148RTE20IV Datasheet - Page 1095
DF2148RTE20IV
Manufacturer Part Number
DF2148RTE20IV
Description
MCU 5V 128K I-TEMP,PB-FREE, 100-
Manufacturer
Renesas Electronics America
Series
H8® H8S/2100r
Specifications of DF2148RTE20IV
Core Processor
H8S/2000
Core Size
16-Bit
Speed
20MHz
Connectivity
Host Interface, I²C, IrDA, SCI
Peripherals
POR, PWM, WDT
Number Of I /o
74
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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TCSR0—Timer Control/Status Register 0
Bit
Initial value
Read/Write
Note: * Only 0 can be written, to clear the flag.
Note: * When OVF is polled and the interval timer interrupt is disabled,
Overflow flag
0
1
R/(W) *
OVF
[Clearing conditions]
• Write 0 in the TME bit
• Read TCSR when OVF = 1 * , then write 0 in OVF
[Setting condition]
When TCNT overflows (changes from H'FF to H'00)
(When internal reset request generation is selected in watchdog
timer mode, OVF is cleared automatically by the internal reset.)
7
0
OVF = 1 must be read at least twice.
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 a reset or NMI interrupt when
TCNT overflows
Timer enable
0
1
TME
R/W
5
0
TCNT is initialized to H'00 and halted
TCNT counts
Reserved bit
RSTS
R/W
4
0
RST/NMI
Reset or NMI
Rev. 4.00 Sep 27, 2006 page 1049 of 1130
0
1
R/W
H'FFA8
3
0
NMI interrupt requested
Internal reset requested
Clock select 2 to 0
CKS2
0
1
Appendix B Internal I/O Registers
CKS2
R/W
2
0
CKS1
0
1
0
1
CKS1
R/W
CKS0
1
0
0
1
0
1
0
1
0
1
REJ09B0327-0400
/2
/64
/128
/512
/2048
/8192
/32768
/131072
CKS0
R/W
Clock
0
0
WDT0
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