7641_06 Datasheet, PDF (295/385 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCOMPUTER

7641 Group
Notes 1: Test conditions: IOHL = ± 5mA, CL = 50 pF
2: twL(RD) = ((n + 0.5) • tc(PHI)) – 5 ns (n = wait number)
twL(WR) = ((n + 0.5) • tc(PHI)) – 5 ns (n = wait number)
For example, two software waits, PHI = 12 MHz operating
twL(RD) = 2.5 • tc(PHI) – 5 ns = 203.33 ns
APPENDIX
3.1 Electrical characteristics
Measurement output pin
100
pF
CMOS output
Fig. 3.1.1 Circuit for measuring output switching
characteristics (1)
Measurement output pin
1 kΩ
100 pF
N-channel open-drain output (Note)
Note: This diagram applies when bit 7 of the serial I/O control
register 1 is “1”.
Fig. 3.1.2 Circuit for measuring output switching
characteristics (2)
Rev.2.00 Aug 28, 2006 page 16 of 108
REJ09B0336-0200