HD64F3644H Renesas Electronics America, HD64F3644H Datasheet - Page 326

• Manufacturer Part Number: HD64F3644H
• Description: IC H8 MCU FLASH 32K 64-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Lr

Specifications of HD64F3644H

• Core Processor: H8/300L
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI
• Peripherals: PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 64-QFP
• Package: 64PQFP
• Family Name: H8
• Maximum Speed: 8 MHz
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 45
• Interface Type: SCI
• On-chip Adc: 8-chx8-bit
• Number Of Timers: 4
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Section 10 Serial Communication Interface
Bit Rate Register (BRR)
BRR is an 8-bit register that designates the transmit/receive bit rate in accordance with the baud
rate generator operating clock selected by bits CKS1 and CKS0 of the serial mode register (SMR).
BRR can be read or written by the CPU at any time.
BRR is initialized to H'FF upon reset, and in standby, watch, subactive, or subsleep mode.
Table 10.6 shows examples of BRR settings in asynchronous mode. The values shown are for
active (high-speed) mode.
Table 10.6 Examples of BRR Settings for Various Bit Rates (Asynchronous Mode)
Bit Rate
(bits/s)
110
150
300
600
1200
2400
4800
9600
19200
31250
38400
Rev. 6.00 Sep 12, 2006 page 304 of 526
REJ09B0326-0600
Bit
Initial value
Read/Write
n
1
0
0
0
0
0
0
N
70
207
103
51
25
12
0
BRR7
R/W
2
7
1
Error
(%)
+0.03
+0.16
+0.16
+0.16
+0.16
+0.16
0
BRR6
R/W
1
6
n
1
0
0
0
0
0
0
0
0
0
BRR5
R/W
2.4576
N
86
255
127
63
31
15
7
3
1
0
5
1
Error
(%)
+0.31
0
0
0
0
0
0
0
0
0
BRR4
OSC (MHz)
R/W
4
1
n
1
1
0
0
0
0
0
0
BRR3
R/W
3
1
N
141
103
207
103
51
25
12
1
4
Error
(%)
+0.03
+0.16
+0.16
+0.16
+0.16
+0.16
+0.16
0
BRR2
R/W
2
1
n
1
1
0
0
0
0
0
0
BRR1
R/W
1
1
4.194304
N
148
108
217
108
54
26
13
6
BRR0
R/W
Error
(%)
–0.04
+0.21
+0.21
+0.21
–0.70
+1.14
–2.48
–2.48
0
1