HD64F2239TF20I Renesas Electronics America, HD64F2239TF20I Datasheet - Page 546

• Manufacturer Part Number: HD64F2239TF20I
• Description: MCU 3V 384K I-TEMP 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2200r

Specifications of HD64F2239TF20I

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 72
• Program Memory Size: 384KB (384K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 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: Contains lead / RoHS non-compliant
• Eeprom Size: -

Section 14 IEBus™ Controller (IEB) [H8S/2258 Group]
(a) Priority according to communications type
(b) Priority according to master address
(2) Communications Mode
The IEBus has three communications modes with different transfer speeds. Table 14.2 shows the
transfer speed in each communications mode and the maximum number of transfer bytes in one
communications frame.
Table 14.2 Transfer speed and Maximum Number of Transfer Bytes in Each
Notes:
Rev. 6.00 Mar. 18, 2010 Page 484 of 982
REJ09B0054-0600
Communications
Mode
0
1
2
Note: When a unit loses arbitration, the unit can automatically enter retransfer mode (0 to 7
Broadcast communications (one-to-many communications) has priority over normal
communications (one-to-one communications).
A unit with the smallest master address has priority among units with the same
communications type.
Example: The master address is configured with 12 bits. A unit with H'000 has the highest
priority, and a unit with H'FFF has the lowest priority.
1. An effective transfer speed when the maximum number of transfer bytes is transmitted.
2. Oscillation frequency when this LSI is used
retransfer times can be selected by bits RN2 to RN0 in IEMCR).
Each unit connected to the IEBus should select a communications mode prior to
performing communications. Note that correct communications is not guaranteed if the
master and slave units do not adopt the same communications mode.
In the case of communications between a unit with φ = 12 MHz and a unit with φ = 12.58
MHz, correct communications is not possible even if the same communications mode is
adopted. Communications must be performed at the same oscillation frequency.
Communications Mode
Maximum Number
of Transfer Bytes
(byte/frame)
16
32
128
φ = 12 MHz *
About 3.9
About 17
About 26
Effective Transfer Speed *
2
φ = 12.58 MHz *
About 4.1
About 18
About 27
1
(kbps)
2