DF2170VTE33 Renesas Electronics America, DF2170VTE33 Datasheet - Page 133

• Manufacturer Part Number: DF2170VTE33
• Description: MCU 3V 256K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2170VTE33

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 33MHz
• Connectivity: SCI, USB
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 76
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Other names: HD64F2170VTE33; HD64F2170VTE33

Bit
13
12
11
10
9
8
7
6
Bit Name
RCW1
RCW0

RTCK2
RTCK1
RTCK0
RFSHE

0
Initial
Value
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
CAS-RAS Wait Control
These bits select the number of wait cycles to be
inserted between the CAS assert cycle and RAS assert
cycle in a DRAM refresh cycle.
00: Wait state not inserted
01: 1 wait state inserted
10: 2 wait states inserted
11: 3 wait states inserted
Reserved
Refresh Control
Reserved
Description
This bit can be read from or written to. However, the
write value should always be 0.
Refresh Counter Clock Select
These bits select the clock to be used to increment the
refresh counter. When the input clock is selected with
bits RTCK2 to RTCK0, the refresh counter begins
counting up.
000: Count operation halted
001: Count on φ/2
010: Count on φ/8
011: Count on φ/32
100: Count on φ/128
101: Count on φ/512
110: Count on φ/2048
111: Count on φ/4096
Refresh control can be performed. When refresh control
is not performed, the refresh timer can be used as an
interval timer.
0: Refresh control is not performed
1: Refresh control is performed
This bit can be read from or written to. However, the
write value should always be 0.
Rev. 2.00, 03/04, page 99 of 534