7721 datasheet(17/577 Pages) RENESAS

17 / 577 page

DESCRIPTION

7721 Group User’s Manual

1–2

1.1 Performance overview

Table 1.1.1 lists the performance overview of the M37721.

Table 1.1.1 M37721 performance overview

ROM

RAM

P5–P10

TA0–TA4

TB0–TB2

UART0, UART1

M37721S2BFP

M37721S1BFP

Parameters

Number of basic instructions

Instruction execution time

External clock input frequency f(XIN)

Memory sizes

Programmable Input/Output

ports

Multifunctional timers

Serial I/O

A-D converter

Watchdog timer

DMA controller

DRAM controller

Real-time output

Interrupts

Clock generating circuit

Supply voltage

Power dissipation

Port Input/Output

characteristics

Memory expansion

Operating temperature range

Device structure

Package

Input/Output withstand voltage

Output current

Functions

103

160 ns (the minimum instruction at f(XIN) = 25 MHz)

25 MHz (maximum)

External

1024 bytes

512 bytes

8 bits ! 6

5 bits ! 1

16 bits ! 5

16 bits ! 3

(UART or clock synchronous serial I/O) ! 2

8-bit successive approximation method ! 1 (8 channels)

12 bits ! 1

4 channels

Maximum transfer rate : 12.5 Mbytes/sec.

(at f(XIN) = 25 MHz, 1-bus cycle transfer)

Maximum transfer rate : 6.25 Mbytes/sec.

(at f(XIN) = 25 MHz, 2-bus cycle transfer)

____

CAS before RAS refreshing method

4 bits ! 2 channels

or 6 bits ! 1 channel + 2 bits ! 1 channel

3 external, 20 internal (priority levels 0 to 7 can

be set for each interrupt with software)

Built-in (externally connected to a ceramic

resonator or a quartz-crystal oscillator)

5 V ±10 %

135 mW (at f(XIN) = 25 MHz, typ.)

5 V

5 mA

Maximum 16 Mbytes

–20°C to 85°C

CMOS high-performance silicon gate process

100-pin plastic molded QFP

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