HD64F2168VTE33 Renesas Electronics America, HD64F2168VTE33 Datasheet - Page 418

• Manufacturer Part Number: HD64F2168VTE33
• Manufacturer: Renesas Electronics America

Specifications of HD64F2168VTE33

• Cpu Family: H8S
• Device Core Size: 16/32Bit
• Frequency (max): 33MHz
• Interface Type: I2C/IrDA/SCI
• Program Memory Type: Flash
• Program Memory Size: 256KB
• Total Internal Ram Size: 40KB
• # I/os (max): 106
• Number Of Timers - General Purpose: 5
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 3V
• On-chip Adc: 8-chx10-bit
• On-chip Dac: 2-chx8-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: -20C to 75C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 144
• Package Type: TQFP
• Lead Free Status / Rohs Status: Not Compliant

14.3.11 Serial Enhanced Mode Register_0 and 2 (SEMR_0 and SEMR_2)
SEMR_0 and SEMR_2 select the SCI_0 and SCI_2 functions, respectively, and the clock source
in asynchronous mode. The basic clock is automatically specified when the average transfer rate
operation is selected.
Rev. 3.00, 03/04, page 376 of 830
Bit
7
6, 5
3
Bit Name
SSE

ABCS
Initial Value
0
All 0
0
R
R/W Description
R/W SCI Select Enable
R/W Asynchronous Mode Basic Clock Select
Enables/disables the external pins to select the SCI
functions when the external clock is supplied in clock
synchronous mode.
0: Disables the external pins to select the SCI functions
1: Enables the external pins to select the SCI functions
•
SSE0I pin input = 0 (selected state): SCI_0 operates
normally
SSE0I pin input = 1 (non-selected state): SCI_0 halts
operation
(TxD0 = high-impedance state, SCK0 = fixed to high)
•
SSE2I pin input = 0 (selected state): SCI_2 operates
normally
SSE2I pin input = 1 (non-selected state): SCI_2 halts
operation
(TxD2 = high-impedance state, SCK2 = fixed to high)
Reserved
These bits are always read as 0 and cannot be
modified.
Specifies the basic clock for a 1-bit cycle in
asynchronous mode.
This bit is valid only in asynchronous mode (C/A bit in
SMR is 0).
0: The basic clock has a frequency 16 times the transfer
1: The basic clock has a frequency 8 times the transfer
(normal)
clock frequency (normal operation)
clock frequency (double-speed operation)
SCI_0
SCI_2