Item
Specification
Serial communication
interface (SCI)
(2 channels)
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Asynchronous or synchronous mode (selectable)
Full duplex: can transmit and receive simultaneously
On-chip baud rate generator
I2C bus interface
(1 channel) [option]
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Conforms to Philips I2C bus interface
Includes single master mode and slave mode
Host interface (HIF)
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8-bit host interface port
Three host interrupt requests (HIRQ1, HIRQ11, HIRQ12)
Regular and fast A20 gate output
Two register sets, each with two data registers and a status register
Keyboard controller
A/D converter
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Controls a matrix-scan keyboard by providing a keyboard scan function
with wake-up interrupts and sense ports
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10-bit resolution
Eight channels: single or scan mode (selectable)
Start of A/D conversion can be externally triggered
Sample-and-hold function
D/A converter
I/O ports
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8-bit resolution
Two channels
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74 input/output lines (16 of which can drive LEDs)
8 input-only lines
Interrupts
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Nine external interrupt lines: NMI, IRQ0 to IRQ7
26 on-chip interrupt sources
Wait control
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Three selectable wait modes
Operating modes
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Expanded mode with on-chip ROM disabled (mode 1)
Expanded mode with on-chip ROM disabled (mode 1)
Single-chip mode (mode 3)
Power-down modes
Other features
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Sleep mode
Software standby mode
Hardware standby mode
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On-chip clock pulse generator
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RENESAS [ RENESAS TECHNOLOGY CORP ]
