DF2148BTE20 Renesas Electronics America, DF2148BTE20 Datasheet - Page 361

• Manufacturer Part Number: DF2148BTE20
• Description: IC H8S MCU FLASH 128K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2148BTE20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, IrDA, SCI, X-Bus
• Peripherals: 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): 4.5 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: HD64F2148BTE20; HD64F2148BTE20

12.5.6
The OVF bit in TCSR is set to 1 when the TCNT overflows (changes from H'FF to H'00). Figure
12.10 shows the timing of OVF flag setting.
12.6
If bits CKS2 to CKS0 in either TCR_0 or TCR_1 are set to B'100, the 8-bit timers of the two
channels are cascaded. With this configuration, a single 16-bit timer can be used (16-bit count
mode) or the compare-matches of the 8-bit timer of channel 0 can be counted by the 8-bit timer of
channel 1 (compare-match count mode).
12.6.1
When bits CKS2 to CKS0 in TCR_0 are set to B'100, the timer functions as a single 16-bit timer
with channel 0 occupying the upper 8 bits and channel 1 occupying the lower 8 bits.
Setting of Compare-Match Flags:
The CMF flag in TCSR_0 is set to 1 when a 16-bit compare-match occurs.
The CMF flag in TCSR_1 is set to 1 when a lower 8-bit compare-match occurs.
Timing of Overflow Flag (OVF) Setting
Operation with Cascaded Connection
16-Bit Count Mode
TCNT
Overflow signal
OVF
Figure 12.10 Timing of OVF Flag Setting
H'FF
Rev. 3.00 Mar 21, 2006 page 305 of 788
H'00
Section 12 8-Bit Timer (TMR)
REJ09B0300-0300