Owner's manual

5-19
INSTRUCTION HEX CODE
UHSM CLOCK
CYCLES
UHSM TIME @
25MHz
8051 CLOCK
CYCLES
8051 TIME @
25MHz
UHSM vs. 8051
SPEED
ADVANTAGE
ACALL addr 11 Hex code
Hex codes = 11, 31, 51, 71,
91, B1, D1, or F1
Byte 1 2 80 ns 24 960 ns 12
LCALL addr 16 12 3 120 ns 24 960 ns 8
RET 22 3 120 ns 24 960 ns 8
RETI 32 3 120 ns 24 960 ns 8
AJMP add r 11 Hex code
Hex code = 01, 21, 41, 61,
81, A1, C1, or E1
Byte 1 2 80 ns 24 960 ns 12
LJMP addr 16 02 3 120 ns 24 960 ns 8
JMP @A+DPTR 73 3 120 ns 24 960 ns 8
SJMP rel 80 3 120 ns 24 960 ns 8
JZ rel 60 3 120 ns 24 960 ns 8
JNZ rel 70 3 120 ns 24 960 ns 8
JC rel 40 3 120 ns 24 960 ns 8
JNC rel 50 3 120 ns 24 960 ns 8
JB bit, rel 20 4 160 ns 24 960 ns 6
JNB bit, rel 30 4 160 ns 24 960 ns 6
JBC bit, rel 10 4 160 ns 24 960 ns 6
CJNE A, direct, rel B5 5 200 ns 24 960 ns 4.8
CJNE A, #data, rel B4 4 160 ns 24 960 ns 6
CJNE Rn, #data, rel B8..BF 4 160 ns 24 960 ns 6
CJNE @Ri, #data, rel B6..B7 5 200 ns 24 960 ns 4.8
DJNZ Rn, rel D8..DF 4 160 ns 24 960 ns 6
DJNZ direct, rel D5 5 200 ns 24 960 ns 4.8
NOP 00 1 40 ns 12 480 ns 12
Table 5-1. Instruction Timing Comparison (continued)
Ultra-High-Speed Flash
Microcontroller User’s Guide
Maxim Integrated